85844665 has 8 divisors (see below), whose sum is σ = 103081608. Its totient is φ = 68630400.

The previous prime is 85844653. The next prime is 85844687. The reversal of 85844665 is 56644858.

It can be written as a sum of positive squares in 4 ways, for example, as 393129 + 85451536 = 627^2 + 9244^2 .

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

It is not a de Polignac number, because 85844665 - 2⁷ = 85844537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4239 + ... + 13771.

It is an arithmetic number, because the mean of its divisors is an integer number (12885201).

Almost surely, 2^85844665 is an apocalyptic number.

It is an amenable number.

85844665 is a deficient number, since it is larger than the sum of its proper divisors (17236943).

85844665 is a wasteful number, since it uses less digits than its factorization.

85844665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11339.

The product of its digits is 921600, while the sum is 46.

The square root of 85844665 is about 9265.2396083426. The cubic root of 85844665 is about 441.1345804740.

The spelling of 85844665 in words is "eighty-five million, eight hundred forty-four thousand, six hundred sixty-five".