85684556 has 12 divisors (see below), whose sum is σ = 158768568. Its totient is φ = 40322112.

The previous prime is 85684523. The next prime is 85684561. The reversal of 85684556 is 65548658.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85684556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629966 + ... + 630101.

It is an arithmetic number, because the mean of its divisors is an integer number (13230714).

Almost surely, 2^85684556 is an apocalyptic number.

It is an amenable number.

85684556 is a deficient number, since it is larger than the sum of its proper divisors (73084012).

85684556 is a wasteful number, since it uses less digits than its factorization.

85684556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260088 (or 1260086 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 47.

The square root of 85684556 is about 9256.5952704005. The cubic root of 85684556 is about 440.8601562274.

The spelling of 85684556 in words is "eighty-five million, six hundred eighty-four thousand, five hundred fifty-six".