Q: Is 720,945 a Prime Number?
A: No, 720,945 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 720945 can be evenly divided by 1 3 5 9 15 37 45 111 185 333 433 555 1,299 1,665 2,165 3,897 6,495 16,021 19,485 48,063 80,105 144,189 240,315 and 720,945, with no remainder.
Since 720,945 cannot be divided by just 1 and 720,945, it is not a prime number.