A number is divisible by 8 if the last three digits of the number form a number that is divisible by 8.Example:For 7,384, look at the last three digits: 384. Since 384 is divisible by 8, the entire number 7,384 is divisible by 8.A number is divisible by 9 if the sum of its digits is divisible by 9.Example: For 567, the sum of the digits is 5 + 6 + 7 = 18.Since 18 is divisible by 9, 567 is also divisible by 9.