Q: Is 720,775 a Prime Number?
A: No, 720,775 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 720775 can be evenly divided by 1 5 11 25 55 275 2,621 13,105 28,831 65,525 144,155 and 720,775, with no remainder.
Since 720,775 cannot be divided by just 1 and 720,775, it is not a prime number.