Maybe this was mentioned already, but I just noticed something that gave me chills.

Any place you divide the number 6174 then add the two numbers together it equals 9. For example, 6 + (1=7=4) =6+(1+2) =6+3=9

Then to keep going, (6+1+7) +4 =
=14 (1+4) +4
=5 +4 =9
Same if you divide the number 6174 in the middle... (6+1)+(7+4)= 9

Go ahead and try it. :) Math is fun.