general_fact: 652 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 652 is the only known non-perfect number whose number of divisors and sum of smaller divisors are perfect.
trivia: 652 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: October 13th is the day in 1917 that the "Miracle of the Sun" is witnessed by an estimated 70,000 people in the Cova da Iria in Fátima, Portugal.