Q: Is 667,128 a Prime Number?
A: No, 667,128 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 667128 can be evenly divided by 1 2 3 4 6 7 8 11 12 14 19 21 22 24 28 33 38 42 44 56 57 66 76 77 84 88 114 132 133 152 154 168 209 228 231 264 266 308 361 399 418 456 462 532 616 627 722 798 836 924 1,064 1,083 1,254 1,444 1,463 1,596 1,672 1,848 2,166 2,508 2,527 2,888 2,926 3,192 3,971 4,332 4,389 5,016 5,054 5,852 7,581 7,942 8,664 8,778 10,108 11,704 11,913 15,162 15,884 17,556 20,216 23,826 27,797 30,324 31,768 35,112 47,652 55,594 60,648 83,391 95,304 111,188 166,782 222,376 333,564 and 667,128, with no remainder.
Since 667,128 cannot be divided by just 1 and 667,128, it is not a prime number.