85739665 has 16 divisors (see below), whose sum is σ = 112902336. Its totient is φ = 61988800.

The previous prime is 85739659. The next prime is 85739681. The reversal of 85739665 is 56693758.

It is not a de Polignac number, because 85739665 - 2³ = 85739657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5010 + ... + 14020.

It is an arithmetic number, because the mean of its divisors is an integer number (7056396).

Almost surely, 2^85739665 is an apocalyptic number.

It is an amenable number.

85739665 is a deficient number, since it is larger than the sum of its proper divisors (27162671).

85739665 is a wasteful number, since it uses less digits than its factorization.

85739665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9200.

The product of its digits is 1360800, while the sum is 49.

The square root of 85739665 is about 9259.5715343638. The cubic root of 85739665 is about 440.9546507187.

The spelling of 85739665 in words is "eighty-five million, seven hundred thirty-nine thousand, six hundred sixty-five".