Fatto generale: 590 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 590 is a value of n for which f(n) + f(n+1) divides s(n) + s(n+1).
Trivia: 590 is an unremarkable number.
Data storica: August 12th is the day in 30 BC that Cleopatra VII Philopator, the last ruler of the Egyptian Ptolemaic dynasty, commits suicide, allegedly by means of an asp bite.