Step 1: Divide the number into separate digits:
93714 => 9 3 7 1 4
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
9 to 3 = 6
3 to 7 = 4
7 to 1 = 6
1 to 4 = 3
4 to 9 = 5
Step 3: Combine the filters to a string:
6 4 6 3 5 = 64635