85855790 has 16 divisors (see below), whose sum is σ = 154768320. Its totient is φ = 34291680.

The previous prime is 85855789. The next prime is 85855807. The reversal of 85855790 is 9755858.

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, 1220 + ... + 13160.

It is an arithmetic number, because the mean of its divisors is an integer number (9673020).

Almost surely, 2^85855790 is an apocalyptic number.

85855790 is a deficient number, since it is larger than the sum of its proper divisors (68912530).

85855790 is a wasteful number, since it uses less digits than its factorization.

85855790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12667.

The product of its (nonzero) digits is 504000, while the sum is 47.

The square root of 85855790 is about 9265.8399511323. The cubic root of 85855790 is about 441.1536358621.

The spelling of 85855790 in words is "eighty-five million, eight hundred fifty-five thousand, seven hundred ninety".