89564220 has 36 divisors (see below), whose sum is σ = 271678680. Its totient is φ = 23883744.

The previous prime is 89564207. The next prime is 89564249. The reversal of 89564220 is 2246598.

It is a happy number.

89564220 is a `hidden beast` number, since 8 + 9 + 5 + 642 + 2 + 0 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (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 11 ways as a sum of consecutive naturals, for example, 248610 + ... + 248969.

It is an arithmetic number, because the mean of its divisors is an integer number (7546630).

Almost surely, 2^89564220 is an apocalyptic number.

It is an amenable number.

89564220 is an abundant number, since it is smaller than the sum of its proper divisors (182114460).

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

89564220 is a wasteful number, since it uses less digits than its factorization.

89564220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497594 (or 497589 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 89564220 is about 9463.8374880383. The cubic root of 89564220 is about 447.4160053750.

The spelling of 89564220 in words is "eighty-nine million, five hundred sixty-four thousand, two hundred twenty".