Step 1: Divide the number into separate digits:
50968 => 5 0 9 6 8
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
5 to 0 = 5
0 to 9 = 9
9 to 6 = 3
6 to 8 = 2
8 to 5 = 3
Step 3: Combine the filters to a string:
5 9 3 2 3 = 59323