General fact: 6588 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 6588 is the number of sided 12-iamonds.
Trivia: 6588 is a boring number.
Historical date: January 13th is the day in 1972 that Prime Minister Kofi Abrefa Busia and President Edward Akufo-Addo of Ghana are ousted in a bloodless military coup by Colonel Ignatius Kutu Acheampong.