Q: Is 66 a Prime Number?
A: No, 66 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 66 can be evenly divided by 1 2 3 6 11 22 33 and 66, with no remainder.
Since 66 cannot be divided by just 1 and 66, it is not a prime number.