Fatto generale: 4785 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4785 is an unremarkable number.
Trivia: 4785 is an uninteresting number.
Data storica: February 5th is the day in 1924 that the Royal Greenwich Observatory begins broadcasting the hourly time signals known as the Greenwich Time Signal or the "BBC pips".