89699618 has 18 divisors (see below), whose sum is σ = 139052403. Its totient is φ = 43396560.

The previous prime is 89699557. The next prime is 89699653. The reversal of 89699618 is 81699698.

It can be written as a sum of positive squares in 5 ways, for example, as 25331089 + 64368529 = 5033^2 + 8023^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6697.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 495488 + ... + 495668.

Almost surely, 2^89699618 is an apocalyptic number.

89699618 is a deficient number, since it is larger than the sum of its proper divisors (49352785).

89699618 is an equidigital number, since it uses as much as digits as its factorization.

89699618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 220 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 56.

The square root of 89699618 is about 9470.9882272126. The cubic root of 89699618 is about 447.6413510587.

The spelling of 89699618 in words is "eighty-nine million, six hundred ninety-nine thousand, six hundred eighteen".