The reality is that a 0 and a 6 can look similar.  when a landlord does a credit check and the number comes up as an invalid SS # or not your name, the landlord will assume it was a typo, not intentionally done.  Also, the state/feds are not going to come after you unless there is probably cause to believe that you committed or are committing a crime.  If you are not trying to steal someone's Identity the police will have no reason to look into it and like i said, the landlord will believe it was a typo.