Q: Is 763,640 a Prime Number?
A: No, 763,640 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 763640 can be evenly divided by 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 1,123 2,246 4,492 5,615 8,984 11,230 19,091 22,460 38,182 44,920 76,364 95,455 152,728 190,910 381,820 and 763,640, with no remainder.
Since 763,640 cannot be divided by just 1 and 763,640, it is not a prime number.