Q: Is 645,037 a Prime Number?
A: Yes, 645,037 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 645037 can be evenly divided by 1 and 645,037, with no remainder.
Since 645,037 can be divided by just 1 and 645,037, it is a prime number.