Q: Is 672,440 a Prime Number?
A: No, 672,440 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 672440 can be evenly divided by 1 2 4 5 8 10 20 40 16,811 33,622 67,244 84,055 134,488 168,110 336,220 and 672,440, with no remainder.
Since 672,440 cannot be divided by just 1 and 672,440, it is not a prime number.