general_fact: 1659 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 1659 is a structured truncated octahedral number.
trivia: 1659 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: July 16th is the day in 1790 that the District of Columbia is established as the capital of the United States after signature of the Residence Act.