89081568 has 36 divisors (see below), whose sum is σ = 253326528. Its totient is φ = 29693760.

The previous prime is 89081549. The next prime is 89081579. The reversal of 89081568 is 86518098.

89081568 is a `hidden beast` number, since 8 + 9 + 0 + 81 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154368 + ... + 154943.

It is an arithmetic number, because the mean of its divisors is an integer number (7036848).

Almost surely, 2^89081568 is an apocalyptic number.

It is an amenable number.

89081568 is an abundant number, since it is smaller than the sum of its proper divisors (164244960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89081568 is a wasteful number, since it uses less digits than its factorization.

89081568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309327 (or 309316 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 89081568 is about 9438.3032373409. The cubic root of 89081568 is about 446.6108650372.

The spelling of 89081568 in words is "eighty-nine million, eighty-one thousand, five hundred sixty-eight".