85686406 has 16 divisors (see below), whose sum is σ = 138938688. Its totient is φ = 39398400.

The previous prime is 85686397. The next prime is 85686427. The reversal of 85686406 is 60468658.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 966 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (8683668).

Almost surely, 2^85686406 is an apocalyptic number.

85686406 is a deficient number, since it is larger than the sum of its proper divisors (53252282).

85686406 is a wasteful number, since it uses less digits than its factorization.

85686406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12447.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 85686406 is about 9256.6951986117. The cubic root of 85686406 is about 440.8633290489.

The spelling of 85686406 in words is "eighty-five million, six hundred eighty-six thousand, four hundred six".