Q: Is 685,430 a Prime Number?
A: No, 685,430 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 685430 can be evenly divided by 1 2 5 10 68,543 137,086 342,715 and 685,430, with no remainder.
Since 685,430 cannot be divided by just 1 and 685,430, it is not a prime number.