90880618 has 16 divisors (see below), whose sum is σ = 137518920. Its totient is φ = 45043200.

The previous prime is 90880607. The next prime is 90880619. The reversal of 90880618 is 81608809.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 89813529 + 1067089 = 9477^2 + 1033^2 .

It is not an unprimeable number, because it can be changed into a prime (90880619) 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, 196908 + ... + 197368.

Almost surely, 2^90880618 is an apocalyptic number.

90880618 is a deficient number, since it is larger than the sum of its proper divisors (46638302).

90880618 is a wasteful number, since it uses less digits than its factorization.

90880618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 90880618 is about 9533.1326435752. The cubic root of 90880618 is about 449.5973649548.

The spelling of 90880618 in words is "ninety million, eight hundred eighty thousand, six hundred eighteen".