Step 1: Divide the number into separate digits:
77367 => 7 7 3 6 7
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
7 to 7 = 0
7 to 3 = 4
3 to 6 = 3
6 to 7 = 1
7 to 7 = 0
Step 3: Combine the filters to a string:
0 4 3 1 0 = 04310