85656873 has 4 divisors (see below), whose sum is σ = 114209168. Its totient is φ = 57104580.

The previous prime is 85656869. The next prime is 85656911. The reversal of 85656873 is 37865658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85656873 - 2² = 85656869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85656833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14276143 + ... + 14276148.

It is an arithmetic number, because the mean of its divisors is an integer number (28552292).

Almost surely, 2^85656873 is an apocalyptic number.

It is an amenable number.

85656873 is a deficient number, since it is larger than the sum of its proper divisors (28552295).

85656873 is a wasteful number, since it uses less digits than its factorization.

85656873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28552294.

The product of its digits is 1209600, while the sum is 48.

The square root of 85656873 is about 9255.0998373870. The cubic root of 85656873 is about 440.8126733560.

The spelling of 85656873 in words is "eighty-five million, six hundred fifty-six thousand, eight hundred seventy-three".