564845 has 8 divisors (see below), whose sum is σ = 682776. Its totient is φ = 448576.

The previous prime is 564827. The next prime is 564871. The reversal of 564845 is 548465.

It can be written as a sum of positive squares in 4 ways, for example, as 94249 + 470596 = 307^2 + 686^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 564845 - 2¹⁰ = 563821 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 539 + ... + 1191.

It is an arithmetic number, because the mean of its divisors is an integer number (85347).

2⁵⁶⁴⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

564845 is a deficient number, since it is larger than the sum of its proper divisors (117931).

564845 is a wasteful number, since it uses less digits than its factorization.

564845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its digits is 19200, while the sum is 32.

The square root of 564845 is about 751.5617073800. The cubic root of 564845 is about 82.6627335827.

The spelling of 564845 in words is "five hundred sixty-four thousand, eight hundred forty-five".