Q: Is 687,720 a Composite Number?

Why is 687,720 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 687,720 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 110 120 132 165 220 264 330 440 521 660 1,042 1,320 1,563 2,084 2,605 3,126 4,168 5,210 5,731 6,252 7,815 10,420 11,462 12,504 15,630 17,193 20,840 22,924 28,655 31,260 34,386 45,848 57,310 62,520 68,772 85,965 114,620 137,544 171,930 229,240 343,860 and 687,720, with no remainder.

Since 687,720 cannot be divided by just 1 and 687,720, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).