847

847 = 7 x 11 x 11.

847 is a divisor of 27¹⁰ - 1.

847 is the sum of the digits of the 14th Mersenne prime.

847 is 1011101 in base 3.

847 is the sum of distinct factorials: 847 = 6! + 5! + 3! + 1!

Source: What's Special About This Number?