math_fact: 20670 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 20670 is an uninteresting number.
historical_date: August 3rd is the day in 2005 that President of Mauritania Maaouya Ould Sid'Ahmed Taya is overthrown in a military coup while attending the funeral of King Fahd in Saudi Arabia.