90086718 has 16 divisors (see below), whose sum is σ = 180360576. Its totient is φ = 29997720.

The previous prime is 90086707. The next prime is 90086719. The reversal of 90086718 is 81768009.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90086719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096 + ... + 13467.

It is an arithmetic number, because the mean of its divisors is an integer number (11272536).

Almost surely, 2^90086718 is an apocalyptic number.

90086718 is an abundant number, since it is smaller than the sum of its proper divisors (90273858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90086718 is a wasteful number, since it uses less digits than its factorization.

90086718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15599.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 90086718 is about 9491.4023199947. The cubic root of 90086718 is about 448.2843612142.

The spelling of 90086718 in words is "ninety million, eighty-six thousand, seven hundred eighteen".