85408565 has 16 divisors (see below), whose sum is σ = 115416576. Its totient is φ = 60110400.

The previous prime is 85408537. The next prime is 85408573. The reversal of 85408565 is 56580458.

It is not a de Polignac number, because 85408565 - 2⁶ = 85408501 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23342 + ... + 26751.

It is an arithmetic number, because the mean of its divisors is an integer number (7213536).

Almost surely, 2^85408565 is an apocalyptic number.

It is an amenable number.

85408565 is a deficient number, since it is larger than the sum of its proper divisors (30008011).

85408565 is a wasteful number, since it uses less digits than its factorization.

85408565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50140.

The product of its (nonzero) digits is 192000, while the sum is 41.

The square root of 85408565 is about 9241.6754433382. The cubic root of 85408565 is about 440.3863084593.

The spelling of 85408565 in words is "eighty-five million, four hundred eight thousand, five hundred sixty-five".