Fait général: 16711 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 16711 is an uninteresting number.
Culture générale: 16711 is an unremarkable number.
Date historique: October 1st is the day in 1971 that the first brain-scan using x-ray computed tomography (CT or CAT scan) is performed at Atkinson Morley Hospital in Wimbledon, London.