89864665 has 8 divisors (see below), whose sum is σ = 117641088. Its totient is φ = 65356080.

The previous prime is 89864647. The next prime is 89864693. The reversal of 89864665 is 56646898.

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

It is not a de Polignac number, because 89864665 - 2⁹ = 89864153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816897 + ... + 817006.

It is an arithmetic number, because the mean of its divisors is an integer number (14705136).

Almost surely, 2^89864665 is an apocalyptic number.

It is an amenable number.

89864665 is a deficient number, since it is larger than the sum of its proper divisors (27776423).

89864665 is a wasteful number, since it uses less digits than its factorization.

89864665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633919.

The product of its digits is 2488320, while the sum is 52.

The square root of 89864665 is about 9479.6975162713. The cubic root of 89864665 is about 447.9157357063.

The spelling of 89864665 in words is "eighty-nine million, eight hundred sixty-four thousand, six hundred sixty-five".