564501320 has 128 divisors (see below), whose sum is σ = 1414195200. Its totient is φ = 201830400.

The previous prime is 564501319. The next prime is 564501409. The reversal of 564501320 is 23105465.

It is a self number, because there is not a number n which added to its sum of digits gives 564501320.

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 31 ways as a sum of consecutive naturals, for example, 1285661 + ... + 1286099.

It is an arithmetic number, because the mean of its divisors is an integer number (11048400).

Almost surely, 2^564501320 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 564501320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707097600).

564501320 is an abundant number, since it is smaller than the sum of its proper divisors (849693880).

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

564501320 is a wasteful number, since it uses less digits than its factorization.

564501320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 564501320 is about 23759.2365197201. The cubic root of 564501320 is about 826.4596479823.

Adding to 564501320 its reverse (23105465), we get a palindrome (587606785).

The spelling of 564501320 in words is "five hundred sixty-four million, five hundred one thousand, three hundred twenty".