568117109 has 4 divisors (see below), whose sum is σ = 649276704. Its totient is φ = 486957516.

The previous prime is 568117087. The next prime is 568117111. The reversal of 568117109 is 901711865.

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: 901711865 = 5 ⋅180342373.

It is a cyclic number.

It is not a de Polignac number, because 568117109 - 2²⁸ = 299681653 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 (568117159) 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, 40579787 + ... + 40579800.

It is an arithmetic number, because the mean of its divisors is an integer number (162319176).

Almost surely, 2^568117109 is an apocalyptic number.

It is an amenable number.

568117109 is a deficient number, since it is larger than the sum of its proper divisors (81159595).

568117109 is an equidigital number, since it uses as much as digits as its factorization.

568117109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81159594.

The product of its (nonzero) digits is 15120, while the sum is 38.

The square root of 568117109 is about 23835.2073412421. The cubic root of 568117109 is about 828.2204622910.

The spelling of 568117109 in words is "five hundred sixty-eight million, one hundred seventeen thousand, one hundred nine".