Fatto generale: 66970 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 66970 is an uninteresting number.
Trivia: 66970 is an uninteresting number.
Data storica: May 10th is the day in 1924 that J. Edgar Hoover is appointed the Director of the United States' Federal Bureau of Investigation, and remains so until his death in 1972.