Q: Is 720,648 a Prime Number?
A: No, 720,648 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 720648 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 36 72 10,009 20,018 30,027 40,036 60,054 80,072 90,081 120,108 180,162 240,216 360,324 and 720,648, with no remainder.
Since 720,648 cannot be divided by just 1 and 720,648, it is not a prime number.