85868587 has 8 divisors (see below), whose sum is σ = 99004896. Its totient is φ = 72949632.

The previous prime is 85868579. The next prime is 85868597. The reversal of 85868587 is 78586858.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85868587 - 2³ = 85868579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85868537) 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 7 ways as a sum of consecutive naturals, for example, 53488 + ... + 55069.

It is an arithmetic number, because the mean of its divisors is an integer number (12375612).

Almost surely, 2^85868587 is an apocalyptic number.

85868587 is a deficient number, since it is larger than the sum of its proper divisors (13136309).

85868587 is a wasteful number, since it uses less digits than its factorization.

85868587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108677.

The product of its digits is 4300800, while the sum is 55.

The square root of 85868587 is about 9266.5304726203. The cubic root of 85868587 is about 441.1755530895.

The spelling of 85868587 in words is "eighty-five million, eight hundred sixty-eight thousand, five hundred eighty-seven".