567989 has 4 divisors (see below), whose sum is σ = 569856. Its totient is φ = 566124.

The previous prime is 567979. The next prime is 567991. The reversal of 567989 is 989765.

567989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-567989 is a prime.

It is a super-2 number, since 2×567989² = 645223008242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (567949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359 + ... + 1124.

It is an arithmetic number, because the mean of its divisors is an integer number (142464).

2⁵⁶⁷⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

567989 is a deficient number, since it is larger than the sum of its proper divisors (1867).

567989 is a wasteful number, since it uses less digits than its factorization.

567989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866.

The product of its digits is 136080, while the sum is 44.

The square root of 567989 is about 753.6504494791. The cubic root of 567989 is about 82.8158203724.

The spelling of 567989 in words is "five hundred sixty-seven thousand, nine hundred eighty-nine".