Q: Is 671,680 a Prime Number?
A: No, 671,680 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 671680 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 2,099 4,198 8,396 10,495 16,792 20,990 33,584 41,980 67,168 83,960 134,336 167,920 335,840 and 671,680, with no remainder.
Since 671,680 cannot be divided by just 1 and 671,680, it is not a prime number.