89666618 has 8 divisors (see below), whose sum is σ = 135527040. Its totient is φ = 44490940.

The previous prime is 89666617. The next prime is 89666623. The reversal of 89666618 is 81666698.

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

It is not an unprimeable number, because it can be changed into a prime (89666617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170858 + ... + 171381.

It is an arithmetic number, because the mean of its divisors is an integer number (16940880).

Almost surely, 2^89666618 is an apocalyptic number.

89666618 is a deficient number, since it is larger than the sum of its proper divisors (45860422).

89666618 is a wasteful number, since it uses less digits than its factorization.

89666618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342372.

The product of its digits is 746496, while the sum is 50.

The square root of 89666618 is about 9469.2459045058. The cubic root of 89666618 is about 447.5864493887.

The spelling of 89666618 in words is "eighty-nine million, six hundred sixty-six thousand, six hundred eighteen".