85660865 has 16 divisors (see below), whose sum is σ = 104189952. Its totient is φ = 67604544.

The previous prime is 85660829. The next prime is 85660871. The reversal of 85660865 is 56806658.

It is a cyclic number.

It is not a de Polignac number, because 85660865 - 2⁶ = 85660801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 175652 + ... + 176138.

It is an arithmetic number, because the mean of its divisors is an integer number (6511872).

Almost surely, 2^85660865 is an apocalyptic number.

It is an amenable number.

85660865 is a deficient number, since it is larger than the sum of its proper divisors (18529087).

85660865 is a wasteful number, since it uses less digits than its factorization.

85660865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 85660865 is about 9255.3154997547. The cubic root of 85660865 is about 440.8195212083.

The spelling of 85660865 in words is "eighty-five million, six hundred sixty thousand, eight hundred sixty-five".