85855965 has 32 divisors (see below), whose sum is σ = 155729280. Its totient is φ = 40041216.

The previous prime is 85855951. The next prime is 85855997. The reversal of 85855965 is 56955858.

It is not a de Polignac number, because 85855965 - 2¹⁴ = 85839581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7882 + ... + 15291.

It is an arithmetic number, because the mean of its divisors is an integer number (4866540).

Almost surely, 2^85855965 is an apocalyptic number.

It is an amenable number.

85855965 is a deficient number, since it is larger than the sum of its proper divisors (69873315).

85855965 is a wasteful number, since it uses less digits than its factorization.

85855965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23213.

The product of its digits is 2160000, while the sum is 51.

The square root of 85855965 is about 9265.8493944160. The cubic root of 85855965 is about 441.1539355967.

The spelling of 85855965 in words is "eighty-five million, eight hundred fifty-five thousand, nine hundred sixty-five".