89511665 has 8 divisors (see below), whose sum is σ = 109017600. Its totient is φ = 70540272.

The previous prime is 89511649. The next prime is 89511671. The reversal of 89511665 is 56611598.

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

It is a cyclic number.

It is not a de Polignac number, because 89511665 - 2⁴ = 89511649 is a prime.

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, 133265 + ... + 133934.

It is an arithmetic number, because the mean of its divisors is an integer number (13627200).

Almost surely, 2^89511665 is an apocalyptic number.

It is an amenable number.

89511665 is a deficient number, since it is larger than the sum of its proper divisors (19505935).

89511665 is a wasteful number, since it uses less digits than its factorization.

89511665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267271.

The product of its digits is 64800, while the sum is 41.

The square root of 89511665 is about 9461.0604585321. The cubic root of 89511665 is about 447.3284758203.

The spelling of 89511665 in words is "eighty-nine million, five hundred eleven thousand, six hundred sixty-five".