563731 has 8 divisors (see below), whose sum is σ = 666720. Its totient is φ = 466368.

The previous prime is 563723. The next prime is 563743. The reversal of 563731 is 137365.

It is a happy number.

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

It is not a de Polignac number, because 563731 - 2³ = 563723 is a prime.

It is a super-2 number, since 2×563731² = 635585280722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 563696 and 563705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (83340).

2⁵⁶³⁷³¹ is an apocalyptic number.

563731 is a deficient number, since it is larger than the sum of its proper divisors (102989).

563731 is a wasteful number, since it uses less digits than its factorization.

563731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813.

The product of its digits is 1890, while the sum is 25.

The square root of 563731 is about 750.8202181614. The cubic root of 563731 is about 82.6083547178.

It can be divided in two parts, 5 and 63731, that added together give a palindrome (63736).

The spelling of 563731 in words is "five hundred sixty-three thousand, seven hundred thirty-one".