85715165 has 8 divisors (see below), whose sum is σ = 103877208. Its totient is φ = 67892800.

The previous prime is 85715153. The next prime is 85715171. The reversal of 85715165 is 56151758.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9205156 + 76510009 = 3034^2 + 8747^2 .

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

It is not a de Polignac number, because 85715165 - 2⁶ = 85715101 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, 84362 + ... + 85371.

It is an arithmetic number, because the mean of its divisors is an integer number (12984651).

Almost surely, 2^85715165 is an apocalyptic number.

It is an amenable number.

85715165 is a deficient number, since it is larger than the sum of its proper divisors (18162043).

85715165 is a wasteful number, since it uses less digits than its factorization.

85715165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169839.

The product of its digits is 42000, while the sum is 38.

The square root of 85715165 is about 9258.2484844597. The cubic root of 85715165 is about 440.9126459744.

The spelling of 85715165 in words is "eighty-five million, seven hundred fifteen thousand, one hundred sixty-five".