Q: Is 620,720 a Prime Number?
A: No, 620,720 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 620720 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 7,759 15,518 31,036 38,795 62,072 77,590 124,144 155,180 310,360 and 620,720, with no remainder.
Since 620,720 cannot be divided by just 1 and 620,720, it is not a prime number.