Hecho general: 652 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 652 is the only known non-perfect number whose number of divisors and sum of smaller divisors are perfect.
Trivia: 652 is a boring number.
Fecha histórica: October 13th is the day in 1972 that Uruguayan Air Force Flight 571 crashes in the Andes mountains, near the border between Argentina and Chile.