Q: Is 1,689,921 a Prime Number?
A: No, 1,689,921 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 1689921 can be evenly divided by 1 3 9 103 309 927 1,823 5,469 16,407 187,769 563,307 and 1,689,921, with no remainder.
Since 1,689,921 cannot be divided by just 1 and 1,689,921, it is not a prime number.