Q: Is 685,005 a Prime Number?
A: No, 685,005 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 685005 can be evenly divided by 1 3 5 15 45,667 137,001 228,335 and 685,005, with no remainder.
Since 685,005 cannot be divided by just 1 and 685,005, it is not a prime number.