Q: Is 685,009 a Prime Number?
A: No, 685,009 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 685009 can be evenly divided by 1 13 23 29 79 299 377 667 1,027 1,817 2,291 8,671 23,621 29,783 52,693 and 685,009, with no remainder.
Since 685,009 cannot be divided by just 1 and 685,009, it is not a prime number.