Q: Is 771,620 a Prime Number?
A: No, 771,620 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 771620 can be evenly divided by 1 2 4 5 10 20 41 82 164 205 410 820 941 1,882 3,764 4,705 9,410 18,820 38,581 77,162 154,324 192,905 385,810 and 771,620, with no remainder.
Since 771,620 cannot be divided by just 1 and 771,620, it is not a prime number.