general_fact: 6667 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6667 is the number of self-dual planar graphs with 24 edges.
trivia: 6667 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: April 2nd is the day in 2002 that Israeli forces surround the Church of the Nativity in Bethlehem into which armed Palestinians had retreated.