85579687 has 4 divisors (see below), whose sum is σ = 85631080. Its totient is φ = 85528296.

The previous prime is 85579679. The next prime is 85579691. The reversal of 85579687 is 78697558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85579687 - 2³ = 85579679 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 (85579387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23112 + ... + 26557.

It is an arithmetic number, because the mean of its divisors is an integer number (21407770).

Almost surely, 2^85579687 is an apocalyptic number.

85579687 is a deficient number, since it is larger than the sum of its proper divisors (51393).

85579687 is a wasteful number, since it uses less digits than its factorization.

85579687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51392.

The product of its digits is 4233600, while the sum is 55.

The square root of 85579687 is about 9250.9289803781. The cubic root of 85579687 is about 440.6802271168.

The spelling of 85579687 in words is "eighty-five million, five hundred seventy-nine thousand, six hundred eighty-seven".