It's actually a beneficial number. Negativity was applied later, by the Church.
666 is the magic sum, or sum of the magic constants of a six by six magic square, any row or column of which adds up to 111. http://en.wikipedia.org/wiki/666_(number)
There are several ancient manuscripts of Revelation that show numbers such as 616 or 606 instead of 666. This very likely was due to a scribal error of some sort that somehow propagated down through additional copies as the scribe copied the manuscripts This is especially likely given that the original meaning of the number 666 was concerned with the numbers magical properties.http://www.666man.net/666religionhistoryoverview.htmlThe magic square of the sun has the curious property that if all the numbers between 1 and 36 are added together the total is 666. That this number should again be associated with the Sun - as in the Kings quotation mentioned earlier - may indicate some fragmentary knowledge or tradition from the distant past. Symbolic associations were undoubtedly important to ancient peoples. Yet it is likely that originally there was some valid practical thinking behind their number symbolism. We do not know what this can be, so we can only surmise.
To continue our investigation of 666, let's take a close look at the number itself. The factors of 666 are 2 x 3 x 3 x 37 or 18 x 37. The number 37 has the unusual properties that many of its multiples have repeated digits:
1 x 37 = 37
2 x 37 = 74
3 x 37 = 111
6 x 37 = 222
9 x 37 = 333
10 x 37 = 370
12 x 37 = 444
15 x 37 = 555
18 x 37 = 666
21 x 37 = 777
24 x 37 = 888http://www.kch42.dial.pipex.com/666c.htm:hi: