Q: Is 636,604 a Prime Number?
A: No, 636,604 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 636604 can be evenly divided by 1 2 4 167 334 668 953 1,906 3,812 159,151 318,302 and 636,604, with no remainder.
Since 636,604 cannot be divided by just 1 and 636,604, it is not a prime number.