90566320 has 40 divisors (see below), whose sum is σ = 226766736. Its totient is φ = 33439488.

The previous prime is 90566297. The next prime is 90566323. The reversal of 90566320 is 2366509.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (90566323) 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, 42502 + ... + 44581.

Almost surely, 2^90566320 is an apocalyptic number.

It is an amenable number.

90566320 is an abundant number, since it is smaller than the sum of its proper divisors (136200416).

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

90566320 is a wasteful number, since it uses less digits than its factorization.

90566320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87109 (or 87103 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 90566320 is about 9516.6338586708. The cubic root of 90566320 is about 449.0784763038.

It can be divided in two parts, 9056 and 6320, that added together give a square (15376 = 124²).

The spelling of 90566320 in words is "ninety million, five hundred sixty-six thousand, three hundred twenty".