Q: Is 636,430 a Prime Number?
A: No, 636,430 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 636430 can be evenly divided by 1 2 5 10 31 62 155 310 2,053 4,106 10,265 20,530 63,643 127,286 318,215 and 636,430, with no remainder.
Since 636,430 cannot be divided by just 1 and 636,430, it is not a prime number.