Step 1: Divide the number into separate digits:
65477 => 6 5 4 7 7
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
6 to 5 = 1
5 to 4 = 1
4 to 7 = 3
7 to 7 = 0
7 to 6 = 1
Step 3: Combine the filters to a string:
1 1 3 0 1 = 11301