Fatto generale: 61868 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 61868 is a boring number.
Trivia: 61868 is an uninteresting number.
Data storica: May 21st is the day in 1894 that the Manchester Ship Canal in England is officially opened by Queen Victoria, who later knights its designer Sir Edward Leader Williams.