6568338961 has 4 divisors (see below), whose sum is σ = 6679666800. Its totient is φ = 6457011124.

The previous prime is 6568338947. The next prime is 6568338979. The reversal of 6568338961 is 1698338656.

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.

It is a cyclic number.

It is not a de Polignac number, because 6568338961 - 2¹¹ = 6568336913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6568338461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55663831 + ... + 55663948.

It is an arithmetic number, because the mean of its divisors is an integer number (1669916700).

Almost surely, 2^6568338961 is an apocalyptic number.

It is an amenable number.

6568338961 is a deficient number, since it is larger than the sum of its proper divisors (111327839).

6568338961 is a wasteful number, since it uses less digits than its factorization.

6568338961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111327838.

The product of its digits is 5598720, while the sum is 55.

The square root of 6568338961 is about 81045.2895670069. The cubic root of 6568338961 is about 1872.7731986649.

The spelling of 6568338961 in words is "six billion, five hundred sixty-eight million, three hundred thirty-eight thousand, nine hundred sixty-one".