564831 has 12 divisors (see below), whose sum is σ = 825552. Its totient is φ = 372096.

The previous prime is 564827. The next prime is 564871. The reversal of 564831 is 138465.

It is not a de Polignac number, because 564831 - 2² = 564827 is a prime.

It is a super-2 number, since 2×564831² = 638068117122, which contains 22 as substring.

564831 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 564795 and 564804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 550 + ... + 1196.

It is an arithmetic number, because the mean of its divisors is an integer number (68796).

2⁵⁶⁴⁸³¹ is an apocalyptic number.

564831 is a deficient number, since it is larger than the sum of its proper divisors (260721).

564831 is a wasteful number, since it uses less digits than its factorization.

564831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 564831 is about 751.5523933832. The cubic root of 564831 is about 82.6620506296.

The spelling of 564831 in words is "five hundred sixty-four thousand, eight hundred thirty-one".