Q: Is 678,611 a Prime Number?
A: Yes, 678,611 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 678611 can be evenly divided by 1 and 678,611, with no remainder.
Since 678,611 can be divided by just 1 and 678,611, it is a prime number.