Fatto generale: 620 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 620 is the number of sided 7-hexes.
Trivia: 620 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 11th is the day in 1961 that Hurricane Carla strikes the Texas coast as a Category 4 hurricane, the second strongest storm ever to hit the state.