Q: Is 634,240 a Prime Number?
A: No, 634,240 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 634240 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 991 1,982 3,964 4,955 7,928 9,910 15,856 19,820 31,712 39,640 63,424 79,280 126,848 158,560 317,120 and 634,240, with no remainder.
Since 634,240 cannot be divided by just 1 and 634,240, it is not a prime number.