568609440 has 384 divisors, whose sum is σ = 2173796352. Its totient is φ = 122204160.

The previous prime is 568609439. The next prime is 568609463. The reversal of 568609440 is 44906865.

It is a super-2 number, since 2×568609440² = 646633390514227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 568609392 and 568609401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5520429 + ... + 5520531.

It is an arithmetic number, because the mean of its divisors is an integer number (5660928).

Almost surely, 2^568609440 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 568609440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086898176).

568609440 is an abundant number, since it is smaller than the sum of its proper divisors (1605186912).

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

568609440 is a wasteful number, since it uses less digits than its factorization.

568609440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 568609440 is about 23845.5329149927. The cubic root of 568609440 is about 828.4596388449.

The spelling of 568609440 in words is "five hundred sixty-eight million, six hundred nine thousand, four hundred forty".