666 - Numbers Of The Beast

From a web page of the same name (but wait, there's more)

666	Biblical Number of the Beast
660	Approximate Number of the Beast
DCLXVI	Roman Numeral of the Beast
665	Number of the Beast's Older Brother
667	Number of the Beast's Younger Sister
668	Number of the Beast's Neighbor
999	Number of the Australian Beast
333	Number of the Semi-Beast
66	Number of the Downsized Beast
6, uh..., I forget	Number of the Blond Beast