568041989 has 2 divisors, whose sum is σ = 568041990. Its totient is φ = 568041988.

The previous prime is 568041979. The next prime is 568042037. The reversal of 568041989 is 989140865.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503239489 + 64802500 = 22433^2 + 8050^2 .

It is a cyclic number.

It is not a de Polignac number, because 568041989 - 2⁴ = 568041973 is a prime.

It is a super-2 number, since 2×568041989² = 645343402534152242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (568041979) 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 as a sum of consecutive naturals, namely, 284020994 + 284020995.

It is an arithmetic number, because the mean of its divisors is an integer number (284020995).

Almost surely, 2^568041989 is an apocalyptic number.

It is an amenable number.

568041989 is a deficient number, since it is larger than the sum of its proper divisors (1).

568041989 is an equidigital number, since it uses as much as digits as its factorization.

568041989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 568041989 is about 23833.6314689978. The cubic root of 568041989 is about 828.1839565175.

The spelling of 568041989 in words is "five hundred sixty-eight million, forty-one thousand, nine hundred eighty-nine".