Divisor 19621

To determine if any number is divisible by 19621, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 2803 - then it is divisible by 19621.

The following tests must pass:

• Test if a number is divisible by 7
• The "tklos96 Test" for Divisibility by 2803

Easy!