Q: Is 689,564 a Prime Number?
A: No, 689,564 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 689564 can be evenly divided by 1 2 4 31 62 67 83 124 134 166 268 332 2,077 2,573 4,154 5,146 5,561 8,308 10,292 11,122 22,244 172,391 344,782 and 689,564, with no remainder.
Since 689,564 cannot be divided by just 1 and 689,564, it is not a prime number.