Q: Is 20,637 a Prime Number?
A: No, 20,637 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 20637 can be evenly divided by 1 3 9 2,293 6,879 and 20,637, with no remainder.
Since 20,637 cannot be divided by just 1 and 20,637, it is not a prime number.