85618671 has 4 divisors (see below), whose sum is σ = 114158232. Its totient is φ = 57079112.

The previous prime is 85618667. The next prime is 85618711. The reversal of 85618671 is 17681658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85618671 - 2² = 85618667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85618601) 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, 14269776 + ... + 14269781.

It is an arithmetic number, because the mean of its divisors is an integer number (28539558).

Almost surely, 2^85618671 is an apocalyptic number.

85618671 is a deficient number, since it is larger than the sum of its proper divisors (28539561).

85618671 is a wasteful number, since it uses less digits than its factorization.

85618671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28539560.

The product of its digits is 80640, while the sum is 42.

The square root of 85618671 is about 9253.0357721128. The cubic root of 85618671 is about 440.7471311165.

The spelling of 85618671 in words is "eighty-five million, six hundred eighteen thousand, six hundred seventy-one".