85659405 has 16 divisors (see below), whose sum is σ = 147598080. Its totient is φ = 42170688.

The previous prime is 85659401. The next prime is 85659407. The reversal of 85659405 is 50495658.

It is not a de Polignac number, because 85659405 - 2² = 85659401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85659401) 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, 219445 + ... + 219834.

It is an arithmetic number, because the mean of its divisors is an integer number (9224880).

Almost surely, 2^85659405 is an apocalyptic number.

It is an amenable number.

85659405 is a deficient number, since it is larger than the sum of its proper divisors (61938675).

85659405 is a wasteful number, since it uses less digits than its factorization.

85659405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439300.

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 85659405 is about 9255.2366258243. The cubic root of 85659405 is about 440.8170167579.

The spelling of 85659405 in words is "eighty-five million, six hundred fifty-nine thousand, four hundred five".