89568021 has 8 divisors (see below), whose sum is σ = 123276544. Its totient is φ = 57785760.

The previous prime is 89568013. The next prime is 89568047. The reversal of 89568021 is 12086598.

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

It is not a de Polignac number, because 89568021 - 2³ = 89568013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89568001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481456 + ... + 481641.

It is an arithmetic number, because the mean of its divisors is an integer number (15409568).

Almost surely, 2^89568021 is an apocalyptic number.

It is an amenable number.

89568021 is a deficient number, since it is larger than the sum of its proper divisors (33708523).

89568021 is a wasteful number, since it uses less digits than its factorization.

89568021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963131.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 89568021 is about 9464.0383029656. The cubic root of 89568021 is about 447.4223345549.

The spelling of 89568021 in words is "eighty-nine million, five hundred sixty-eight thousand, twenty-one".