85690679 has 4 divisors (see below), whose sum is σ = 88645560. Its totient is φ = 82735800.

The previous prime is 85690667. The next prime is 85690691. The reversal of 85690679 is 97609658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97609658 = 2 ⋅48804829.

It is an interprime number because it is at equal distance from previous prime (85690667) and next prime (85690691).

It is a cyclic number.

It is not a de Polignac number, because 85690679 - 2¹⁶ = 85625143 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 (85690079) 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, 1477397 + ... + 1477454.

It is an arithmetic number, because the mean of its divisors is an integer number (22161390).

Almost surely, 2^85690679 is an apocalyptic number.

85690679 is a deficient number, since it is larger than the sum of its proper divisors (2954881).

85690679 is a wasteful number, since it uses less digits than its factorization.

85690679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954880.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 85690679 is about 9256.9260016487. The cubic root of 85690679 is about 440.8706572347.

The spelling of 85690679 in words is "eighty-five million, six hundred ninety thousand, six hundred seventy-nine".