Hecho matemático: 64668 is an uninteresting number.
Trivia: 64668 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: January 19th is the day in 379 that Emperor Gratian elevates Flavius Theodosius at Sirmium to Augustus, and gives him power over all the eastern provinces of the Roman Empire.