Q: Is 672,621 a Prime Number?
A: No, 672,621 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 672621 can be evenly divided by 1 3 139 417 1,613 4,839 224,207 and 672,621, with no remainder.
Since 672,621 cannot be divided by just 1 and 672,621, it is not a prime number.