Q: Is 726,621 a Prime Number?
A: No, 726,621 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 726621 can be evenly divided by 1 3 7 21 49 147 4,943 14,829 34,601 103,803 242,207 and 726,621, with no remainder.
Since 726,621 cannot be divided by just 1 and 726,621, it is not a prime number.