Q: Is 1,640,007 a Prime Number?
A: No, 1,640,007 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 1640007 can be evenly divided by 1 3 9 17 27 51 81 153 243 397 459 1,191 1,377 3,573 4,131 6,749 10,719 20,247 32,157 60,741 96,471 182,223 546,669 and 1,640,007, with no remainder.
Since 1,640,007 cannot be divided by just 1 and 1,640,007, it is not a prime number.