85856015 has 16 divisors (see below), whose sum is σ = 119239680. Its totient is φ = 58125600.

The previous prime is 85855997. The next prime is 85856027. The reversal of 85856015 is 51065858.

It is not a de Polignac number, because 85856015 - 2⁶ = 85855951 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 85856015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12761 + ... + 18290.

It is an arithmetic number, because the mean of its divisors is an integer number (7452480).

Almost surely, 2^85856015 is an apocalyptic number.

85856015 is a deficient number, since it is larger than the sum of its proper divisors (33383665).

85856015 is a wasteful number, since it uses less digits than its factorization.

85856015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31142.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 85856015 is about 9265.8520924953. The cubic root of 85856015 is about 441.1540212350.

The spelling of 85856015 in words is "eighty-five million, eight hundred fifty-six thousand, fifteen".