666 - The streak of the beast
Thunder and lightning! I will sacrifice an unholy bottle of beer to my evil liver tonight just to celebrate this streak!
Cheers! Je via sano! Skål! ¡Salud! Prost!
The number is mentioned in the Bible, it's known as Number of the Beast. This beast could be several figures as reads in the article, you can also do more research.
(My personal experience suggests that it's usually associated with evil (Devil or not), regardless of the original mention. I view it like any other number when not purposefully used.)
(edited to add from "when not" to the end)