Step 1: Divide the number into separate digits:
22694 => 2 2 6 9 4
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
2 to 2 = 0
2 to 6 = 4
6 to 9 = 3
9 to 4 = 5
4 to 2 = 2
Step 3: Combine the filters to a string:
0 4 3 5 2 = 04352