Q: Is 3,645,397 a Prime Number?
A: No, 3,645,397 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 3645397 can be evenly divided by 1 7 19 133 27,409 191,863 520,771 and 3,645,397, with no remainder.
Since 3,645,397 cannot be divided by just 1 and 3,645,397, it is not a prime number.