85312689 has 16 divisors (see below), whose sum is σ = 141818880. Its totient is φ = 44318160.

The previous prime is 85312673. The next prime is 85312741. The reversal of 85312689 is 98621358.

It is not a de Polignac number, because 85312689 - 2⁴ = 85312673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85312689.

It is not an unprimeable number, because it can be changed into a prime (85312189) 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, 184429 + ... + 184890.

It is an arithmetic number, because the mean of its divisors is an integer number (8863680).

Almost surely, 2^85312689 is an apocalyptic number.

It is an amenable number.

85312689 is a deficient number, since it is larger than the sum of its proper divisors (56506191).

85312689 is a wasteful number, since it uses less digits than its factorization.

85312689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369340.

The product of its digits is 103680, while the sum is 42.

The square root of 85312689 is about 9236.4868321240. The cubic root of 85312689 is about 440.2214604857.

The spelling of 85312689 in words is "eighty-five million, three hundred twelve thousand, six hundred eighty-nine".