- Is the number odd or even?
- If the sum of the digits is divisible by 3, the number is also.
- If the last two digits form a number divisible by 4, the number is also.
- If the last digit is a 5 or a 0, the number is divisible by 5.
- If the number is divisible by both 3 and 2, it is also divisible by 6.
- If the number ends in 0, it is divisible by 10.
- If the number is divisible by both 3 and 4, it is also divisible by 12.
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