Best Answer

By 3 only.

It is not divisible by 2, 4, 5, 6, 9 & 10.

Division tests:

- 2:

633 is odd (last digit is 3 which is not an even digit), so 633 is not divisible by 2.

- 3:

(Can repeat the summing until a single digit remains; if this digit is 3, 6 or 9 (ie divisible by 3) then the original number is divisible by 3.)

6 + 6 + 3 = 15

1 + 5 = 6

6 is divisible by 3, so 663 is divisible by 3.

- 4:

(Can repeat summing until a single digit remains; if this digit is 4 or 8 (ie divisible by 4) then the original number is divisible by 4.)

6 x 2 + 3 = 15

1 x 2 + 5 = 7

7 is not divisible by 4, so 663 is not divisible by 4.

Note: all multiples of 4 are even; 633 is odd so it cannot be divisible by 4 (the above test does not need to be done).

- 5:

3 is not 0 nor 5, so 663 is not divisible by 5.

- 6:

Fails 2 test (above), so 663 is not divisible by 6.

- 9:

(Can repeat the summing until a single digit remains; if this digit is 9 (ie divisible by 9) then the original number is divisible by 9)

6 + 6 + 3 = 15

1 + 5 = 6

6 is not 9, so 663 is not divisible by 9.

- 10:

3 is not 0, so 663 is not divisible by10.

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Q: Is 663 divisible by 2 3 4 5 6 9 10?

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Related questions

Out of that list, only 3.

663 is divisible by: 1 3 13 17 39 51 221 and 663.

Multiply 663 by any number (ex. 2, 3, 4, 4.5, 4.51) and divide it by 663 and you get that number.

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Yes: 663 divided by three = 221

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