Some divisibility rules

divisor

condition

2

The number is even.

3

The sum of the digits in the number is divisible by 3.

4

The last two digits in the number form a number that is divisible by 4.

5

The number ends in 0 or 5.

6

The number is even and the sum of its digits is divisible by 3.

8

The last three digits in the number form a number that is divisible by 8.

9

The sum of the digits in the number is divisible by 9.

10

The number ends in 0.

11

The difference between the sum of the number’s digits in the odd places and that of the digits in the even places is either 0 or divisible by 11.