564869 has 4 divisors (see below), whose sum is σ = 566496. Its totient is φ = 563244.

The previous prime is 564827. The next prime is 564871. The reversal of 564869 is 968465.

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-564869 is a prime.

It is a super-2 number, since 2×564869² = 638153974322, 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 (564899) 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, 59 + ... + 1064.

It is an arithmetic number, because the mean of its divisors is an integer number (141624).

2⁵⁶⁴⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

564869 is a deficient number, since it is larger than the sum of its proper divisors (1627).

564869 is a wasteful number, since it uses less digits than its factorization.

564869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its digits is 51840, while the sum is 38.

The square root of 564869 is about 751.5776739632. The cubic root of 564869 is about 82.6639043331.

The spelling of 564869 in words is "five hundred sixty-four thousand, eight hundred sixty-nine".