85591918 has 8 divisors (see below), whose sum is σ = 130013280. Its totient is φ = 42254160.

The previous prime is 85591879. The next prime is 85591921. The reversal of 85591918 is 81919558.

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

It is a congruent number.

It is an unprimeable number.

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, 270703 + ... + 271018.

It is an arithmetic number, because the mean of its divisors is an integer number (16251660).

Almost surely, 2^85591918 is an apocalyptic number.

85591918 is a deficient number, since it is larger than the sum of its proper divisors (44421362).

85591918 is a wasteful number, since it uses less digits than its factorization.

85591918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541802.

The product of its digits is 129600, while the sum is 46.

The square root of 85591918 is about 9251.5900255037. The cubic root of 85591918 is about 440.7012200389.

The spelling of 85591918 in words is "eighty-five million, five hundred ninety-one thousand, nine hundred eighteen".