568643328 has 252 divisors, whose sum is σ = 1863232728. Its totient is φ = 171694080.

The previous prime is 568643311. The next prime is 568643371. The reversal of 568643328 is 823346865.

It is a happy number.

568643328 is a `hidden beast` number, since 568 + 64 + 3 + 3 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2052726 + ... + 2053002.

Almost surely, 2^568643328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 568643328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931616364).

568643328 is an abundant number, since it is smaller than the sum of its proper divisors (1294589400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

568643328 is an equidigital number, since it uses as much as digits as its factorization.

568643328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 293 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 568643328 is about 23846.2434777472. The cubic root of 568643328 is about 828.4760967042.

The spelling of 568643328 in words is "five hundred sixty-eight million, six hundred forty-three thousand, three hundred twenty-eight".