564823320 has 64 divisors (see below), whose sum is σ = 1702149120. Its totient is φ = 149937024.

The previous prime is 564823307. The next prime is 564823331. The reversal of 564823320 is 23328465.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16207 + ... + 37313.

It is an arithmetic number, because the mean of its divisors is an integer number (26596080).

Almost surely, 2^564823320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 564823320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851074560).

564823320 is an abundant number, since it is smaller than the sum of its proper divisors (1137325800).

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

564823320 is a wasteful number, since it uses less digits than its factorization.

564823320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21344 (or 21340 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 564823320 is about 23766.0118656875. The cubic root of 564823320 is about 826.6167597632.

The spelling of 564823320 in words is "five hundred sixty-four million, eight hundred twenty-three thousand, three hundred twenty".