Q: Is 396,580 a Prime Number?
A: No, 396,580 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 396580 can be evenly divided by 1 2 4 5 10 20 79 158 251 316 395 502 790 1,004 1,255 1,580 2,510 5,020 19,829 39,658 79,316 99,145 198,290 and 396,580, with no remainder.
Since 396,580 cannot be divided by just 1 and 396,580, it is not a prime number.