Fatto generale: 43607 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 43607 is an uninteresting number.
Trivia: 43607 is an uninteresting number.
Data storica: May 23rd is the day in 1967 that Egypt closes the Straits of Tiran and blockades the port of Eilat at the northern end of the Gulf of Aqaba to Israeli shipping.