89070618 has 64 divisors (see below), whose sum is σ = 225227520. Its totient is φ = 22851072.

The previous prime is 89070617. The next prime is 89070623. The reversal of 89070618 is 81607098.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (89070617) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 17998 + ... + 22406.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^89070618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89070618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112613760).

89070618 is an abundant number, since it is smaller than the sum of its proper divisors (136156902).

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

89070618 is a wasteful number, since it uses less digits than its factorization.

89070618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471.

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

The square root of 89070618 is about 9437.7231364350. The cubic root of 89070618 is about 446.5925649950.

The spelling of 89070618 in words is "eighty-nine million, seventy thousand, six hundred eighteen".