85617805 has 16 divisors (see below), whose sum is σ = 126451584. Its totient is φ = 54192960.

The previous prime is 85617803. The next prime is 85617811. The reversal of 85617805 is 50871658.

It is not a de Polignac number, because 85617805 - 2¹ = 85617803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85617803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93631 + ... + 94540.

It is an arithmetic number, because the mean of its divisors is an integer number (7903224).

Almost surely, 2^85617805 is an apocalyptic number.

It is an amenable number.

85617805 is a deficient number, since it is larger than the sum of its proper divisors (40833779).

85617805 is a wasteful number, since it uses less digits than its factorization.

85617805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188196.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 85617805 is about 9252.9889765416. The cubic root of 85617805 is about 440.7456451155.

The spelling of 85617805 in words is "eighty-five million, six hundred seventeen thousand, eight hundred five".