Q: Is 637,564 a Prime Number?
A: No, 637,564 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 637564 can be evenly divided by 1 2 4 19 38 76 8,389 16,778 33,556 159,391 318,782 and 637,564, with no remainder.
Since 637,564 cannot be divided by just 1 and 637,564, it is not a prime number.