Divisor 19664

To determine if any number is divisible by 19664, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 16 and 1229 - then it is divisible by 19664.

The following tests must pass:

• Test if a number is divisible by 16
• The "Yanik-Pascal Förster Test" for Divisibility by 1229

Easy!