568989 has 12 divisors (see below), whose sum is σ = 828672. Its totient is φ = 376200.

The previous prime is 568987. The next prime is 568991. The reversal of 568989 is 989865.

568989 is a `hidden beast` number, since 568 + 9 + 89 = 666.

It is an interprime number because it is at equal distance from previous prime (568987) and next prime (568991).

It is not a de Polignac number, because 568989 - 2¹ = 568987 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (568987) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1554 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (69056).

2⁵⁶⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

568989 is a deficient number, since it is larger than the sum of its proper divisors (259683).

568989 is a wasteful number, since it uses less digits than its factorization.

568989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 525 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 568989 is about 754.3135952639. The cubic root of 568989 is about 82.8643936523.

It can be divided in two parts, 5689 and 89, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 568989 in words is "five hundred sixty-eight thousand, nine hundred eighty-nine".