General fact: 87370 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 87370 is an unremarkable number.
Trivia: 87370 is an unremarkable number.
Historical date: March 18th is the day in 235 that Emperor Alexander Severus and his mother Julia Mamaea are murdered by legionaries near Moguntiacum (modern Mainz).