Divisor 20647

To determine if any number is divisible by 20647, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 11 and 1877 - then it is divisible by 20647.

The following tests must pass:

• Test if a number is divisible by 11
• The "Sam Bolduan Test" for Divisibility by 1877

Easy!