Q: Is 634,820 a Prime Number?
A: No, 634,820 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 634820 can be evenly divided by 1 2 4 5 10 20 31,741 63,482 126,964 158,705 317,410 and 634,820, with no remainder.
Since 634,820 cannot be divided by just 1 and 634,820, it is not a prime number.