Q: Is 673,820 a Prime Number?
A: No, 673,820 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 673820 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 4,813 9,626 19,252 24,065 33,691 48,130 67,382 96,260 134,764 168,455 336,910 and 673,820, with no remainder.
Since 673,820 cannot be divided by just 1 and 673,820, it is not a prime number.