Q: Is 1,688,009 a Prime Number?
A: No, 1,688,009 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 1688009 can be evenly divided by 1 313 5,393 and 1,688,009, with no remainder.
Since 1,688,009 cannot be divided by just 1 and 1,688,009, it is not a prime number.