Step 1: Divide the number into separate digits:
46796 => 4 6 7 9 6
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
4 to 6 = 2
6 to 7 = 1
7 to 9 = 2
9 to 6 = 3
6 to 4 = 2
Step 3: Combine the filters to a string:
2 1 2 3 2 = 21232