general_fact: 6460 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6460 is a value of n for which the n^{th} prime begins with the digits of n.
trivia: 6460 is a boring number.
historical_date: September 7th is the day in 1906 that Alberto Santos-Dumont flies his 14-bis aircraft at Bagatelle, France for the first time successfully.