85866585 has 16 divisors (see below), whose sum is σ = 157013376. Its totient is φ = 39253248.

The previous prime is 85866551. The next prime is 85866611. The reversal of 85866585 is 58566858.

It is not a de Polignac number, because 85866585 - 2¹² = 85862489 is a prime.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 408784 + ... + 408993.

It is an arithmetic number, because the mean of its divisors is an integer number (9813336).

Almost surely, 2^85866585 is an apocalyptic number.

It is an amenable number.

85866585 is a deficient number, since it is larger than the sum of its proper divisors (71146791).

85866585 is a wasteful number, since it uses less digits than its factorization.

85866585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817792.

The product of its digits is 2304000, while the sum is 51.

The square root of 85866585 is about 9266.4224488203. The cubic root of 85866585 is about 441.1721244382.

The spelling of 85866585 in words is "eighty-five million, eight hundred sixty-six thousand, five hundred eighty-five".