Step 1: Divide the number into separate digits:
65956 => 6 5 9 5 6
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
6 to 5 = 1
5 to 9 = 4
9 to 5 = 4
5 to 6 = 1
6 to 6 = 0
Step 3: Combine the filters to a string:
1 4 4 1 0 = 14410