85617869 has 8 divisors (see below), whose sum is σ = 86965920. Its totient is φ = 84280176.

The previous prime is 85617863. The next prime is 85617871. The reversal of 85617869 is 96871658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85617869 - 2⁴ = 85617853 is a prime.

It is a super-2 number, since 2×85617869² = 14660838984202322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85617863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14987 + ... + 19895.

It is an arithmetic number, because the mean of its divisors is an integer number (10870740).

Almost surely, 2^85617869 is an apocalyptic number.

It is an amenable number.

85617869 is a deficient number, since it is larger than the sum of its proper divisors (1348051).

85617869 is a wasteful number, since it uses less digits than its factorization.

85617869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179.

The product of its digits is 725760, while the sum is 50.

The square root of 85617869 is about 9252.9924348829. The cubic root of 85617869 is about 440.7457549358.

The spelling of 85617869 in words is "eighty-five million, six hundred seventeen thousand, eight hundred sixty-nine".