85708511 has 16 divisors (see below), whose sum is σ = 102643200. Its totient is φ = 69973728.

The previous prime is 85708501. The next prime is 85708523. The reversal of 85708511 is 11580758.

It is not a de Polignac number, because 85708511 - 2²² = 81514207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85708501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42320 + ... + 44298.

It is an arithmetic number, because the mean of its divisors is an integer number (6415200).

Almost surely, 2^85708511 is an apocalyptic number.

85708511 is a deficient number, since it is larger than the sum of its proper divisors (16934689).

85708511 is a wasteful number, since it uses less digits than its factorization.

85708511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278.

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 85708511 is about 9257.8891222568. The cubic root of 85708511 is about 440.9012364466.

The spelling of 85708511 in words is "eighty-five million, seven hundred eight thousand, five hundred eleven".