Q: Is 720,616 a Prime Number?
A: No, 720,616 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 720616 can be evenly divided by 1 2 4 8 13 26 41 52 82 104 164 169 328 338 533 676 1,066 1,352 2,132 2,197 4,264 4,394 6,929 8,788 13,858 17,576 27,716 55,432 90,077 180,154 360,308 and 720,616, with no remainder.
Since 720,616 cannot be divided by just 1 and 720,616, it is not a prime number.