No one's said 69 yet?
I wouldn't say I had many favourite numbers, but one of the few ones that has managed to stick around is my user number on PC: 3164. While it's probably not my 'favourite' number, it's one that has a special place in my heart because of this place. As far as other notable numbers: 0, 1 and 22 are good. As well as any palindromic number (11, 3553, 476858674 etc.) They're goodies. And all of the irrational ones like e and pi and i and all that. Fun times!