85904165 has 8 divisors (see below), whose sum is σ = 104775288. Its totient is φ = 67596480.

The previous prime is 85904129. The next prime is 85904173. The reversal of 85904165 is 56140958.

It can be written as a sum of positive squares in 4 ways, for example, as 5317636 + 80586529 = 2306^2 + 8977^2 .

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

It is not a de Polignac number, because 85904165 - 2⁶ = 85904101 is a prime.

It is a Duffinian number.

It is a congruent 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, 140522 + ... + 141131.

It is an arithmetic number, because the mean of its divisors is an integer number (13096911).

Almost surely, 2^85904165 is an apocalyptic number.

It is an amenable number.

85904165 is a deficient number, since it is larger than the sum of its proper divisors (18871123).

85904165 is a wasteful number, since it uses less digits than its factorization.

85904165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281719.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 85904165 is about 9268.4499782866. The cubic root of 85904165 is about 441.2364755490.

The spelling of 85904165 in words is "eighty-five million, nine hundred four thousand, one hundred sixty-five".