Fatto generale: 84721 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 84721 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 84721 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: December 16th is the day in 1930 that Bank robber Herman Lamm and members of his crew are killed by a posse of 200, following a botched bank robbery in Clinton, Indiana.