85318987 has 16 divisors (see below), whose sum is σ = 97636000. Its totient is φ = 73903104.

The previous prime is 85318979. The next prime is 85318993. The reversal of 85318987 is 78981358.

It is a cyclic number.

It is not a de Polignac number, because 85318987 - 2³ = 85318979 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 85318987.

It is not an unprimeable number, because it can be changed into a prime (85318907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25339 + ... + 28507.

It is an arithmetic number, because the mean of its divisors is an integer number (6102250).

Almost surely, 2^85318987 is an apocalyptic number.

85318987 is a deficient number, since it is larger than the sum of its proper divisors (12317013).

85318987 is a wasteful number, since it uses less digits than its factorization.

85318987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310.

The product of its digits is 483840, while the sum is 49.

The square root of 85318987 is about 9236.8277563241. The cubic root of 85318987 is about 440.2322929756.

The spelling of 85318987 in words is "eighty-five million, three hundred eighteen thousand, nine hundred eighty-seven".