Q: Is 620,380 a Prime Number?
A: No, 620,380 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 620380 can be evenly divided by 1 2 4 5 10 20 31,019 62,038 124,076 155,095 310,190 and 620,380, with no remainder.
Since 620,380 cannot be divided by just 1 and 620,380, it is not a prime number.