56684 Full Form. Full Meaning of 56684 Find long form and abbreviation, slang or definition of 56684. What does 56684 mean? What does 56684 stand for? We are providing world largest and most comprehensive acronyms, names, abbreviations database directory on the Internet. Our data base contains more than 8,00,000 terms abbreviations and acronyms. You can also search unique terms more than 4,00,000 general Comprehensive words.