Q: Is 6,645 a Prime Number?
A: No, 6,645 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 6645 can be evenly divided by 1 3 5 15 443 1,329 2,215 and 6,645, with no remainder.
Since 6,645 cannot be divided by just 1 and 6,645, it is not a prime number.