Fatto matematico: 27677 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 27677 is an unremarkable number.
Data storica: October 10th is the day in 1911 that the Wuchang Uprising leads to the demise of Qing Dynasty, the last Imperial court in China, and the founding of the Republic of China.