Regardless of whether you believe or not-
It is of no significance.
Over the ages the number 666 has become its own superstition apart from the Bible. Many different cults have adopted it. Humans, being naturally superstitious, have developed a fear (which also commonly manifests itself as personal obsession) of the number and mystified it.
Like I said- regardless of whether you believe the Bible or not, the number 666 is still a number, and nothing more, until that day comes.
I don't think it makes any point nor does it provide further discussion material to sit there at your computer and say: "I don't believe."
Many of you Atheists pride yourselves on your logic- and so I would like to hear more of it. Not just the same ignorant: "I'm not listening!"
It would be the same as if every Atheist argument was met with a Christian saying: "lalala- God told me you're wrong."
I'm sure both 'sides' can agree.