85291717 has 4 divisors (see below), whose sum is σ = 97476256. Its totient is φ = 73107180.

The previous prime is 85291709. The next prime is 85291721. The reversal of 85291717 is 71719258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85291717 - 2³ = 85291709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85291717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85291777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6092259 + ... + 6092272.

It is an arithmetic number, because the mean of its divisors is an integer number (24369064).

Almost surely, 2^85291717 is an apocalyptic number.

It is an amenable number.

85291717 is a deficient number, since it is larger than the sum of its proper divisors (12184539).

85291717 is a wasteful number, since it uses less digits than its factorization.

85291717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184538.

The product of its digits is 35280, while the sum is 40.

The square root of 85291717 is about 9235.3514822122. The cubic root of 85291717 is about 440.1853850351.

The spelling of 85291717 in words is "eighty-five million, two hundred ninety-one thousand, seven hundred seventeen".