568304640 has 176 divisors, whose sum is σ = 2020143360. Its totient is φ = 151511040.

The previous prime is 568304623. The next prime is 568304729. The reversal of 568304640 is 46403865.

568304640 is a `hidden beast` number, since 5 + 6 + 8 + 3 + 0 + 4 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 568304595 and 568304604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136185 + ... + 140295.

Almost surely, 2^568304640 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 568304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010071680).

568304640 is an abundant number, since it is smaller than the sum of its proper divisors (1451838720).

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

568304640 is a wasteful number, since it uses less digits than its factorization.

568304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145 (or 4121 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 568304640 is about 23839.1409241189. The cubic root of 568304640 is about 828.3115819578.

The spelling of 568304640 in words is "five hundred sixty-eight million, three hundred four thousand, six hundred forty".