685846308171 has 16 divisors (see below), whose sum is σ = 923695227936. Its totient is φ = 452636818176.

The previous prime is 685846308157. The next prime is 685846308187. The reversal of 685846308171 is 171803648586.

It is a happy number.

It is not a de Polignac number, because 685846308171 - 2⁵ = 685846308139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685846308971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2714860 + ... + 2956713.

It is an arithmetic number, because the mean of its divisors is an integer number (57730951746).

Almost surely, 2^685846308171 is an apocalyptic number.

685846308171 is a deficient number, since it is larger than the sum of its proper divisors (237848919765).

685846308171 is a wasteful number, since it uses less digits than its factorization.

685846308171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671982.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 685846308171 in words is "six hundred eighty-five billion, eight hundred forty-six million, three hundred eight thousand, one hundred seventy-one".