565275776 has 64 divisors (see below), whose sum is σ = 1232863800. Its totient is φ = 256573440.

The previous prime is 565275749. The next prime is 565275779. The reversal of 565275776 is 677572565.

It can be written as a sum of positive squares in 4 ways, for example, as 133633600 + 431642176 = 11560^2 + 20776^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (565275779) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 98720 + ... + 104288.

Almost surely, 2^565275776 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 565275776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616431900).

565275776 is an abundant number, since it is smaller than the sum of its proper divisors (667588024).

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

565275776 is a wasteful number, since it uses less digits than its factorization.

565275776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657 (or 5645 counting only the distinct ones).

The product of its digits is 3087000, while the sum is 50.

The square root of 565275776 is about 23775.5289320764. The cubic root of 565275776 is about 826.8374233917.

The spelling of 565275776 in words is "five hundred sixty-five million, two hundred seventy-five thousand, seven hundred seventy-six".