568404540 has 240 divisors, whose sum is σ = 1967099904. Its totient is φ = 136252800.

The previous prime is 568404533. The next prime is 568404541. The reversal of 568404540 is 45404865.

568404540 is a `hidden beast` number, since 568 + 40 + 4 + 54 + 0 = 666.

It is a super-2 number, since 2×568404540² = 646167442185223200, which contains 22 as substring.

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 = 568404495 and 568404504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (568404541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2975845 + ... + 2976035.

Almost surely, 2^568404540 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 568404540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983549952).

568404540 is an abundant number, since it is smaller than the sum of its proper divisors (1398695364).

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

568404540 is a wasteful number, since it uses less digits than its factorization.

568404540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 568404540 is about 23841.2361256710. The cubic root of 568404540 is about 828.3601143076.

The spelling of 568404540 in words is "five hundred sixty-eight million, four hundred four thousand, five hundred forty".