Step 1: Divide the number into separate digits:
26033 => 2 6 0 3 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
2 to 6 = 4
6 to 0 = 6
0 to 3 = 3
3 to 3 = 0
3 to 2 = 1
Step 3: Combine the filters to a string:
4 6 3 0 1 = 46301