Q: Is 1,977,564 a Prime Number?
A: No, 1,977,564 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 1977564 can be evenly divided by 1 2 3 4 6 12 223 446 669 739 892 1,338 1,478 2,217 2,676 2,956 4,434 8,868 164,797 329,594 494,391 659,188 988,782 and 1,977,564, with no remainder.
Since 1,977,564 cannot be divided by just 1 and 1,977,564, it is not a prime number.