568297921 has 9 divisors (see below), whose sum is σ = 587986083. Its totient is φ = 549250560.

The previous prime is 568297903. The next prime is 568297931. The reversal of 568297921 is 129792865.

The square root of 568297921 is 23839.

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

568297921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 222337921 + 345960000 = 14911^2 + 18600^2 .

It is not a de Polignac number, because 568297921 - 2²³ = 559909313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (568297931) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 738625 + ... + 739393.

It is an arithmetic number, because the mean of its divisors is an integer number (65331787).

Almost surely, 2^568297921 is an apocalyptic number.

568297921 is the 23839-th square number.

568297921 is the 11920-th centered octagonal number.

It is an amenable number.

568297921 is a deficient number, since it is larger than the sum of its proper divisors (19688162).

568297921 is an frugal number, since it uses more digits than its factorization.

568297921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 800 counting only the distinct ones).

The product of its digits is 544320, while the sum is 49.

The cubic root of 568297921 is about 828.3083176009.

Multiplying 568297921 by its sum of digits (49), we get a square (27846598129 = 166873²).

The spelling of 568297921 in words is "five hundred sixty-eight million, two hundred ninety-seven thousand, nine hundred twenty-one".