Q: Is 8,720 a Prime Number?
A: No, 8,720 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 8720 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 109 218 436 545 872 1,090 1,744 2,180 4,360 and 8,720, with no remainder.
Since 8,720 cannot be divided by just 1 and 8,720, it is not a prime number.