Q: Is 660 a Prime Number?
A: No, 660 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 660 can be evenly divided by 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 and 660, with no remainder.
Since 660 cannot be divided by just 1 and 660, it is not a prime number.