85617915 has 8 divisors (see below), whose sum is σ = 136988688. Its totient is φ = 45662880.

The previous prime is 85617913. The next prime is 85617919. The reversal of 85617915 is 51971658.

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

It is not a de Polignac number, because 85617915 - 2¹ = 85617913 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85617913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2853916 + ... + 2853945.

It is an arithmetic number, because the mean of its divisors is an integer number (17123586).

Almost surely, 2^85617915 is an apocalyptic number.

85617915 is a deficient number, since it is larger than the sum of its proper divisors (51370773).

85617915 is a wasteful number, since it uses less digits than its factorization.

85617915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707869.

The product of its digits is 75600, while the sum is 42.

The square root of 85617915 is about 9252.9949205649. The cubic root of 85617915 is about 440.7458338691.

The spelling of 85617915 in words is "eighty-five million, six hundred seventeen thousand, nine hundred fifteen".