565409013 has 24 divisors (see below), whose sum is σ = 829637088. Its totient is φ = 340489056.

The previous prime is 565408999. The next prime is 565409059. The reversal of 565409013 is 310904565.

It is a happy number.

It is not a de Polignac number, because 565409013 - 2⁸ = 565408757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565409063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82870 + ... + 89432.

It is an arithmetic number, because the mean of its divisors is an integer number (34568212).

Almost surely, 2^565409013 is an apocalyptic number.

It is an amenable number.

565409013 is a deficient number, since it is larger than the sum of its proper divisors (264228075).

565409013 is a wasteful number, since it uses less digits than its factorization.

565409013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673 (or 6626 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 565409013 is about 23778.3307446086. The cubic root of 565409013 is about 826.9023808798.

The spelling of 565409013 in words is "five hundred sixty-five million, four hundred nine thousand, thirteen".