666 is also the planetary number for the Sun. As well as the numerical name of the Essene Initiate whose job it was to "test" the other Initiates for progression to their next level, who was called Satan "Oppressor.".... denoted by the Hebraic letters Samekh (S-60) Tau (T-400) Resh (R-200) with the letter Vau (V-6) added to to distinguish that it is a man and not an ideal that is being noted. The letters were worn on a headband about one's head, and engraved on one's bowl/plate carried in the right hand... One can also see that combination in the talismanic square of SATOR/ROTAS by removing the vowels, one is left with S-T-R, about the edges. Used to mark the meeting place for certain Initiates in the Roman world.
The ideal as to the number Five as being the Number of Man is Platonic, not Biblical. The Biblical concept of the Number of Man is Three, Earthly Perfection is Seven, Cosmic Perfection is Eight, and Six is the Number of Near-Perfection. 666 denotes "Near-perfection in the image of Man." The number of Jesus is 888, "Cosmic Perfection in the image of Man."