871

871 = 13 x 67.

871 = 4! + 5! + 3! + 6! + 1! and 45,361 = 8! + 7! + 1!

871 is 31213 in base 4.

871 is a central, polygonal number (A002061). It is also a tridecagonal number (A051865).

871 has the representation 2⁵3³ + 7.

871 is a divisor of 66² - 1.

Source: On-Line Encyclopedia of Integer Sequences