568047108721 has 3 divisors (see below), whose sum is σ = 568047862411. Its totient is φ = 568046355032.

The previous prime is 568047108709. The next prime is 568047108767. The reversal of 568047108721 is 127801740865.

The square root of 568047108721 is 753689.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 127801740865 = 5 ⋅25560348173.

It can be written as a sum of positive squares in only one way, i.e., 2783723121 + 565263385600 = 52761^2 + 751840^2 .

It is not a de Polignac number, because 568047108721 - 2³¹ = 565899625073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (568047108121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 376845 + ... + 1130533.

Almost surely, 2^568047108721 is an apocalyptic number.

568047108721 is the 753689-th square number.

568047108721 is the 376845-th centered octagonal number.

It is an amenable number.

568047108721 is a deficient number, since it is larger than the sum of its proper divisors (753690).

568047108721 is an frugal number, since it uses more digits than its factorization.

568047108721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507378 (or 753689 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

Multiplying 568047108721 by its sum of digits (49), we get a square (27834308327329 = 5275823²).

The spelling of 568047108721 in words is "five hundred sixty-eight billion, forty-seven million, one hundred eight thousand, seven hundred twenty-one".