Q: Is 820,784 a Prime Number?
A: No, 820,784 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 820784 can be evenly divided by 1 2 4 8 16 43 86 172 344 688 1,193 2,386 4,772 9,544 19,088 51,299 102,598 205,196 410,392 and 820,784, with no remainder.
Since 820,784 cannot be divided by just 1 and 820,784, it is not a prime number.