Q: Is 670,215 a Prime Number?
A: No, 670,215 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 670215 can be evenly divided by 1 3 5 7 13 15 21 35 39 65 91 105 195 273 455 491 1,365 1,473 2,455 3,437 6,383 7,365 10,311 17,185 19,149 31,915 44,681 51,555 95,745 134,043 223,405 and 670,215, with no remainder.
Since 670,215 cannot be divided by just 1 and 670,215, it is not a prime number.