565000320 has 128 divisors (see below), whose sum is σ = 1819059840. Its totient is φ = 149151744.

The previous prime is 565000307. The next prime is 565000357. The reversal of 565000320 is 23000565.

It is a tau number, because it is divible by the number of its divisors (128).

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, 196332 + ... + 199188.

It is an arithmetic number, because the mean of its divisors is an integer number (14211405).

Almost surely, 2^565000320 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 565000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909529920).

565000320 is an abundant number, since it is smaller than the sum of its proper divisors (1254059520).

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

565000320 is a wasteful number, since it uses less digits than its factorization.

565000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982 (or 2970 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 565000320 is about 23769.7353792591. The cubic root of 565000320 is about 826.7030970186.

Adding to 565000320 its reverse (23000565), we get a palindrome (588000885).

The spelling of 565000320 in words is "five hundred sixty-five million, three hundred twenty", and thus it is an aban number.