Looking at the keypad in the film:

we see that 836547
could correspond to any of the following 972 (= 35 * 4) string combinations:
tdmjgp, tdmjgq, tdmjgr, tdmjgs, tdmjhp, tdmjhq, tdmjhr, tdmjhs, tdmjip, tdmjiq, tdmjir, tdmjis, tdmkgp, tdmkgq, tdmkgr, tdmkgs, tdmkhp, tdmkhq, tdmkhr, tdmkhs, tdmkip, tdmkiq, tdmkir, tdmkis, tdmlgp, tdmlgq, tdmlgr, tdmlgs, tdmlhp, tdmlhq, tdmlhr, tdmlhs, tdmlip, tdmliq, tdmlir, tdmlis, tdnjgp, tdnjgq, tdnjgr, tdnjgs, tdnjhp, tdnjhq, tdnjhr, tdnjhs, tdnjip, tdnjiq, tdnjir, tdnjis, tdnkgp, tdnkgq, tdnkgr, tdnkgs, tdnkhp, tdnkhq, tdnkhr, tdnkhs, tdnkip, tdnkiq, tdnkir, tdnkis, tdnlgp, tdnlgq, tdnlgr, tdnlgs, tdnlhp, tdnlhq, tdnlhr, tdnlhs, tdnlip, tdnliq, tdnlir, tdnlis, tdojgp, tdojgq, tdojgr, tdojgs, tdojhp, tdojhq, tdojhr, tdojhs, tdojip, tdojiq, tdojir, tdojis, tdokgp, tdokgq, tdokgr, tdokgs, tdokhp, tdokhq, tdokhr, tdokhs, tdokip, tdokiq, tdokir, tdokis, tdolgp, tdolgq, tdolgr, tdolgs, tdolhp, tdolhq, tdolhr, tdolhs, tdolip, tdoliq, tdolir, tdolis, temjgp, temjgq, temjgr, temjgs, temjhp, temjhq, temjhr, temjhs, temjip, temjiq, temjir, temjis, temkgp, temkgq, temkgr, temkgs, temkhp, temkhq, temkhr, temkhs, temkip, temkiq, temkir, temkis, temlgp, temlgq, temlgr, temlgs, temlhp, temlhq, temlhr, temlhs, temlip, temliq, temlir, temlis, tenjgp, tenjgq, tenjgr, tenjgs, tenjhp, tenjhq, tenjhr, tenjhs, tenjip, tenjiq, tenjir, tenjis, tenkgp, tenkgq, tenkgr, tenkgs, tenkhp, tenkhq, tenkhr, tenkhs, tenkip, tenkiq, tenkir, tenkis, tenlgp, tenlgq, tenlgr, tenlgs, tenlhp, tenlhq, tenlhr, tenlhs, tenlip, tenliq, tenlir, tenlis, teojgp, teojgq, teojgr, teojgs, teojhp, teojhq, teojhr, teojhs, teojip, teojiq, teojir, teojis, teokgp, teokgq, teokgr, teokgs, teokhp, teokhq, teokhr, teokhs, teokip, teokiq, teokir, teokis, teolgp, teolgq, teolgr, teolgs, teolhp, teolhq, teolhr, teolhs, teolip, teoliq, teolir, teolis, tfmjgp, tfmjgq, tfmjgr, tfmjgs, tfmjhp, tfmjhq, tfmjhr, tfmjhs, tfmjip, tfmjiq, tfmjir, tfmjis, tfmkgp, tfmkgq, tfmkgr, tfmkgs, tfmkhp, tfmkhq, tfmkhr, tfmkhs, tfmkip, tfmkiq, tfmkir, tfmkis, tfmlgp, tfmlgq, tfmlgr, tfmlgs, tfmlhp, tfmlhq, tfmlhr, tfmlhs, tfmlip, tfmliq, tfmlir, tfmlis, tfnjgp, tfnjgq, tfnjgr, tfnjgs, tfnjhp, tfnjhq, tfnjhr, tfnjhs, tfnjip, tfnjiq, tfnjir, tfnjis, tfnkgp, tfnkgq, tfnkgr, tfnkgs, tfnkhp, tfnkhq, tfnkhr, tfnkhs, tfnkip, tfnkiq, tfnkir, tfnkis, tfnlgp, tfnlgq, tfnlgr, tfnlgs, tfnlhp, tfnlhq, tfnlhr, tfnlhs, tfnlip, tfnliq, tfnlir, tfnlis, tfojgp, tfojgq, tfojgr, tfojgs, tfojhp, tfojhq, tfojhr, tfojhs, tfojip, tfojiq, tfojir, tfojis, tfokgp, tfokgq, tfokgr, tfokgs, tfokhp, tfokhq, tfokhr, tfokhs, tfokip, tfokiq, tfokir, tfokis, tfolgp, tfolgq, tfolgr, tfolgs, tfolhp, tfolhq, tfolhr, tfolhs, tfolip, tfoliq, tfolir, tfolis, udmjgp, udmjgq, udmjgr, udmjgs, udmjhp, udmjhq, udmjhr, udmjhs, udmjip, udmjiq, udmjir, udmjis, udmkgp, udmkgq, udmkgr, udmkgs, udmkhp, udmkhq, udmkhr, udmkhs, udmkip, udmkiq, udmkir, udmkis, udmlgp, udmlgq, udmlgr, udmlgs, udmlhp, udmlhq, udmlhr, udmlhs, udmlip, udmliq, udmlir, udmlis, udnjgp, udnjgq, udnjgr, udnjgs, udnjhp, udnjhq, udnjhr, udnjhs, udnjip, udnjiq, udnjir, udnjis, udnkgp, udnkgq, udnkgr, udnkgs, udnkhp, udnkhq, udnkhr, udnkhs, udnkip, udnkiq, udnkir, udnkis, udnlgp, udnlgq, udnlgr, udnlgs, udnlhp, udnlhq, udnlhr, udnlhs, udnlip, udnliq, udnlir, udnlis, udojgp, udojgq, udojgr, udojgs, udojhp, udojhq, udojhr, udojhs, udojip, udojiq, udojir, udojis, udokgp, udokgq, udokgr, udokgs, udokhp, udokhq, udokhr, udokhs, udokip, udokiq, udokir, udokis, udolgp, udolgq, udolgr, udolgs, udolhp, udolhq, udolhr, udolhs, udolip, udoliq, udolir, udolis, uemjgp, uemjgq, uemjgr, uemjgs, uemjhp, uemjhq, uemjhr, uemjhs, uemjip, uemjiq, uemjir, uemjis, uemkgp, uemkgq, uemkgr, uemkgs, uemkhp, uemkhq, uemkhr, uemkhs, uemkip, uemkiq, uemkir, uemkis, uemlgp, uemlgq, uemlgr, uemlgs, uemlhp, uemlhq, uemlhr, uemlhs, uemlip, uemliq, uemlir, uemlis, uenjgp, uenjgq, uenjgr, uenjgs, uenjhp, uenjhq, uenjhr, uenjhs, uenjip, uenjiq, uenjir, uenjis, uenkgp, uenkgq, uenkgr, uenkgs, uenkhp, uenkhq, uenkhr, uenkhs, uenkip, uenkiq, uenkir, uenkis, uenlgp, uenlgq, uenlgr, uenlgs, uenlhp, uenlhq, uenlhr, uenlhs, uenlip, uenliq, uenlir, uenlis, ueojgp, ueojgq, ueojgr, ueojgs, ueojhp, ueojhq, ueojhr, ueojhs, ueojip, ueojiq, ueojir, ueojis, ueokgp, ueokgq, ueokgr, ueokgs, ueokhp, ueokhq, ueokhr, ueokhs, ueokip, ueokiq, ueokir, ueokis, ueolgp, ueolgq, ueolgr, ueolgs, ueolhp, ueolhq, ueolhr, ueolhs, ueolip, ueoliq, ueolir, ueolis, ufmjgp, ufmjgq, ufmjgr, ufmjgs, ufmjhp, ufmjhq, ufmjhr, ufmjhs, ufmjip, ufmjiq, ufmjir, ufmjis, ufmkgp, ufmkgq, ufmkgr, ufmkgs, ufmkhp, ufmkhq, ufmkhr, ufmkhs, ufmkip, ufmkiq, ufmkir, ufmkis, ufmlgp, ufmlgq, ufmlgr, ufmlgs, ufmlhp, ufmlhq, ufmlhr, ufmlhs, ufmlip, ufmliq, ufmlir, ufmlis, ufnjgp, ufnjgq, ufnjgr, ufnjgs, ufnjhp, ufnjhq, ufnjhr, ufnjhs, ufnjip, ufnjiq, ufnjir, ufnjis, ufnkgp, ufnkgq, ufnkgr, ufnkgs, ufnkhp, ufnkhq, ufnkhr, ufnkhs, ufnkip, ufnkiq, ufnkir, ufnkis, ufnlgp, ufnlgq, ufnlgr, ufnlgs, ufnlhp, ufnlhq, ufnlhr, ufnlhs, ufnlip, ufnliq, ufnlir, ufnlis, ufojgp, ufojgq, ufojgr, ufojgs, ufojhp, ufojhq, ufojhr, ufojhs, ufojip, ufojiq, ufojir, ufojis, ufokgp, ufokgq, ufokgr, ufokgs, ufokhp, ufokhq, ufokhr, ufokhs, ufokip, ufokiq, ufokir, ufokis, ufolgp, ufolgq, ufolgr, ufolgs, ufolhp, ufolhq, ufolhr, ufolhs, ufolip, ufoliq, ufolir, ufolis, vdmjgp, vdmjgq, vdmjgr, vdmjgs, vdmjhp, vdmjhq, vdmjhr, vdmjhs, vdmjip, vdmjiq, vdmjir, vdmjis, vdmkgp, vdmkgq, vdmkgr, vdmkgs, vdmkhp, vdmkhq, vdmkhr, vdmkhs, vdmkip, vdmkiq, vdmkir, vdmkis, vdmlgp, vdmlgq, vdmlgr, vdmlgs, vdmlhp, vdmlhq, vdmlhr, vdmlhs, vdmlip, vdmliq, vdmlir, vdmlis, vdnjgp, vdnjgq, vdnjgr, vdnjgs, vdnjhp, vdnjhq, vdnjhr, vdnjhs, vdnjip, vdnjiq, vdnjir, vdnjis, vdnkgp, vdnkgq, vdnkgr, vdnkgs, vdnkhp, vdnkhq, vdnkhr, vdnkhs, vdnkip, vdnkiq, vdnkir, vdnkis, vdnlgp, vdnlgq, vdnlgr, vdnlgs, vdnlhp, vdnlhq, vdnlhr, vdnlhs, vdnlip, vdnliq, vdnlir, vdnlis, vdojgp, vdojgq, vdojgr, vdojgs, vdojhp, vdojhq, vdojhr, vdojhs, vdojip, vdojiq, vdojir, vdojis, vdokgp, vdokgq, vdokgr, vdokgs, vdokhp, vdokhq, vdokhr, vdokhs, vdokip, vdokiq, vdokir, vdokis, vdolgp, vdolgq, vdolgr, vdolgs, vdolhp, vdolhq, vdolhr, vdolhs, vdolip, vdoliq, vdolir, vdolis, vemjgp, vemjgq, vemjgr, vemjgs, vemjhp, vemjhq, vemjhr, vemjhs, vemjip, vemjiq, vemjir, vemjis, vemkgp, vemkgq, vemkgr, vemkgs, vemkhp, vemkhq, vemkhr, vemkhs, vemkip, vemkiq, vemkir, vemkis, vemlgp, vemlgq, vemlgr, vemlgs, vemlhp, vemlhq, vemlhr, vemlhs, vemlip, vemliq, vemlir, vemlis, venjgp, venjgq, venjgr, venjgs, venjhp, venjhq, venjhr, venjhs, venjip, venjiq, venjir, venjis, venkgp, venkgq, venkgr, venkgs, venkhp, venkhq, venkhr, venkhs, venkip, venkiq, venkir, venkis, venlgp, venlgq, venlgr, venlgs, venlhp, venlhq, venlhr, venlhs, venlip, venliq, venlir, venlis, veojgp, veojgq, veojgr, veojgs, veojhp, veojhq, veojhr, veojhs, veojip, veojiq, veojir, veojis, veokgp, veokgq, veokgr, veokgs, veokhp, veokhq, veokhr, veokhs, veokip, veokiq, veokir, veokis, veolgp, veolgq, veolgr, veolgs, veolhp, veolhq, veolhr, veolhs, veolip, veoliq, veolir, veolis, vfmjgp, vfmjgq, vfmjgr, vfmjgs, vfmjhp, vfmjhq, vfmjhr, vfmjhs, vfmjip, vfmjiq, vfmjir, vfmjis, vfmkgp, vfmkgq, vfmkgr, vfmkgs, vfmkhp, vfmkhq, vfmkhr, vfmkhs, vfmkip, vfmkiq, vfmkir, vfmkis, vfmlgp, vfmlgq, vfmlgr, vfmlgs, vfmlhp, vfmlhq, vfmlhr, vfmlhs, vfmlip, vfmliq, vfmlir, vfmlis, vfnjgp, vfnjgq, vfnjgr, vfnjgs, vfnjhp, vfnjhq, vfnjhr, vfnjhs, vfnjip, vfnjiq, vfnjir, vfnjis, vfnkgp, vfnkgq, vfnkgr, vfnkgs, vfnkhp, vfnkhq, vfnkhr, vfnkhs, vfnkip, vfnkiq, vfnkir, vfnkis, vfnlgp, vfnlgq, vfnlgr, vfnlgs, vfnlhp, vfnlhq, vfnlhr, vfnlhs, vfnlip, vfnliq, vfnlir, vfnlis, vfojgp, vfojgq, vfojgr, vfojgs, vfojhp, vfojhq, vfojhr, vfojhs, vfojip, vfojiq, vfojir, vfojis, vfokgp, vfokgq, vfokgr, vfokgs, vfokhp, vfokhq, vfokhr, vfokhs, vfokip, vfokiq, vfokir, vfokis, vfolgp, vfolgq, vfolgr, vfolgs, vfolhp, vfolhq, vfolhr, vfolhs, vfolip, vfoliq, vfolir, vfolis
None of these, however, are English words. But, if we consider it as a concatenation of two words, we are left with this possible set:
temkip, temlip, temliq, tenkip, tenlip, tenliq, ufokip, ufolip, ufoliq
i.e. combinations of TEM, ten, UFO and kip, lip, liq..
It could also be an acronym (possibly one ending in HQ
).