Q: Is 623,624 a Prime Number?
A: No, 623,624 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 623624 can be evenly divided by 1 2 4 8 137 274 548 569 1,096 1,138 2,276 4,552 77,953 155,906 311,812 and 623,624, with no remainder.
Since 623,624 cannot be divided by just 1 and 623,624, it is not a prime number.