Hecho general: 58620 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 58620 is an uninteresting number.
Trivia: 58620 is a boring number.
Fecha histórica: June 29th is the day in 1956 that the Federal-Aid Highway Act of 1956 is signed, officially creating the United States Interstate Highway System.