565534613 has 4 divisors (see below), whose sum is σ = 646325280. Its totient is φ = 484743948.

The previous prime is 565534609. The next prime is 565534621. The reversal of 565534613 is 316435565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316435565 = 5 ⋅63287113.

It is a cyclic number.

It is not a de Polignac number, because 565534613 - 2² = 565534609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565534633) 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 3 ways as a sum of consecutive naturals, for example, 40395323 + ... + 40395336.

It is an arithmetic number, because the mean of its divisors is an integer number (161581320).

Almost surely, 2^565534613 is an apocalyptic number.

It is an amenable number.

565534613 is a deficient number, since it is larger than the sum of its proper divisors (80790667).

565534613 is an equidigital number, since it uses as much as digits as its factorization.

565534613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80790666.

The product of its digits is 162000, while the sum is 38.

The square root of 565534613 is about 23780.9716580295. The cubic root of 565534613 is about 826.9636057319.

The spelling of 565534613 in words is "five hundred sixty-five million, five hundred thirty-four thousand, six hundred thirteen".