568965609 has 9 divisors (see below), whose sum is σ = 821942589. Its totient is φ = 379262700.

The previous prime is 568965601. The next prime is 568965643. The reversal of 568965609 is 906569865.

The square root of 568965609 is 23853.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 568965609 - 2³ = 568965601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (568965601) 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 8 ways as a sum of consecutive naturals, for example, 67584 + ... + 75534.

Almost surely, 2^568965609 is an apocalyptic number.

568965609 is the 23853-rd square number.

568965609 is the 11927-th centered octagonal number.

It is an amenable number.

568965609 is a deficient number, since it is larger than the sum of its proper divisors (252976980).

568965609 is an frugal number, since it uses more digits than its factorization.

568965609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15908 (or 7954 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The cubic root of 568965609 is about 828.6325812503.

The spelling of 568965609 in words is "five hundred sixty-eight million, nine hundred sixty-five thousand, six hundred nine".