Q: Is 620,478 a Prime Number?
A: No, 620,478 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 620478 can be evenly divided by 1 2 3 6 9 18 34,471 68,942 103,413 206,826 310,239 and 620,478, with no remainder.
Since 620,478 cannot be divided by just 1 and 620,478, it is not a prime number.