85997317 has 8 divisors (see below), whose sum is σ = 101453312. Its totient is φ = 71334000.

The previous prime is 85997293. The next prime is 85997321. The reversal of 85997317 is 71379958.

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

It is a cyclic number.

It is not a de Polignac number, because 85997317 - 2⁷ = 85997189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85997017) 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, 197934 + ... + 198367.

It is an arithmetic number, because the mean of its divisors is an integer number (12681664).

Almost surely, 2^85997317 is an apocalyptic number.

It is an amenable number.

85997317 is a deficient number, since it is larger than the sum of its proper divisors (15455995).

85997317 is a wasteful number, since it uses less digits than its factorization.

85997317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396339.

The product of its digits is 476280, while the sum is 49.

The square root of 85997317 is about 9273.4738367022. The cubic root of 85997317 is about 441.3959059735.

The spelling of 85997317 in words is "eighty-five million, nine hundred ninety-seven thousand, three hundred seventeen".