Q: Is 636,723 a Prime Number?
A: No, 636,723 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 636723 can be evenly divided by 1 3 9 263 269 789 807 2,367 2,421 70,747 212,241 and 636,723, with no remainder.
Since 636,723 cannot be divided by just 1 and 636,723, it is not a prime number.