85989597 has 4 divisors (see below), whose sum is σ = 114652800. Its totient is φ = 57326396.

The previous prime is 85989583. The next prime is 85989599. The reversal of 85989597 is 79598958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85989597 - 2⁴ = 85989581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85989597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85989599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14331597 + ... + 14331602.

It is an arithmetic number, because the mean of its divisors is an integer number (28663200).

Almost surely, 2^85989597 is an apocalyptic number.

It is an amenable number.

85989597 is a deficient number, since it is larger than the sum of its proper divisors (28663203).

85989597 is a wasteful number, since it uses less digits than its factorization.

85989597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28663202.

The product of its digits is 8164800, while the sum is 60.

The square root of 85989597 is about 9273.0575863628. The cubic root of 85989597 is about 441.3826975057.

The spelling of 85989597 in words is "eighty-five million, nine hundred eighty-nine thousand, five hundred ninety-seven".