Q: Is 659,840 a Prime Number?
A: No, 659,840 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 659840 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 1,031 2,062 4,124 5,155 8,248 10,310 16,496 20,620 32,992 41,240 65,984 82,480 131,968 164,960 329,920 and 659,840, with no remainder.
Since 659,840 cannot be divided by just 1 and 659,840, it is not a prime number.