Q: Is 3,605,720 a Prime Number?
A: No, 3,605,720 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 3605720 can be evenly divided by 1 2 4 5 8 10 20 40 109 218 436 545 827 872 1,090 1,654 2,180 3,308 4,135 4,360 6,616 8,270 16,540 33,080 90,143 180,286 360,572 450,715 721,144 901,430 1,802,860 and 3,605,720, with no remainder.
Since 3,605,720 cannot be divided by just 1 and 3,605,720, it is not a prime number.