Six thousand six hundred sixty-six — four sixes

Despite associations with the number of the beast 666, four sixes in numerology carry a positive meaning. Six is the number of love, care, family, and responsibility. 6666 signifies maximum harmony in relationships and healing. 6+6+6+6=24, 2+4=6 — six again.

In Chinese culture, six (六, liù) sounds like 'to flow smoothly' (溜, liū). The number 6666 is a wish that everything goes smoothly four times over. License plates and phone numbers with 6666 sell for enormous sums at auctions in China.

In gaming and internet communities, 6666 is used as an amplified version of 666 — ironically denoting 'mega-evil' or 'ultimate chaos'. At the same time, in Asian gaming chats it expresses admiration for a player's skill (similar to 'gg' or 'respect').