89308665 has 24 divisors (see below), whose sum is σ = 155800008. Its totient is φ = 47324160.

The previous prime is 89308651. The next prime is 89308673. The reversal of 89308665 is 56680398.

It can be written as a sum of positive squares in 4 ways, for example, as 2595321 + 86713344 = 1611^2 + 9312^2 .

It is not a de Polignac number, because 89308665 - 2⁸ = 89308409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 89308665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 745 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (6491667).

Almost surely, 2^89308665 is an apocalyptic number.

It is an amenable number.

89308665 is a deficient number, since it is larger than the sum of its proper divisors (66491343).

89308665 is a wasteful number, since it uses less digits than its factorization.

89308665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809 (or 12806 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 89308665 is about 9450.3261848467. The cubic root of 89308665 is about 446.9900602868.

The spelling of 89308665 in words is "eighty-nine million, three hundred eight thousand, six hundred sixty-five".