Divisor 18621

To determine if any number is divisible by 18621, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 9 and 2069 - then it is divisible by 18621.

The following tests must pass:

• Test if a number is divisible by 9
• The "Christopher Vollick Test" for Divisibility by 2069

Easy!