563631 has 4 divisors (see below), whose sum is σ = 751512. Its totient is φ = 375752.

The previous prime is 563623. The next prime is 563657. The reversal of 563631 is 136365.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 563631 - 2³ = 563623 is a prime.

It is a super-2 number, since 2×563631² = 635359808322, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 16.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93936 + ... + 93941.

It is an arithmetic number, because the mean of its divisors is an integer number (187878).

2⁵⁶³⁶³¹ is an apocalyptic number.

563631 is a deficient number, since it is larger than the sum of its proper divisors (187881).

563631 is a wasteful number, since it uses less digits than its factorization.

563631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187880.

The product of its digits is 1620, while the sum is 24.

The square root of 563631 is about 750.7536213699. The cubic root of 563631 is about 82.6034698087.

Adding to 563631 its reverse (136365), we get a palindrome (699996).

It can be divided in two parts, 5 and 63631, that added together give a palindrome (63636).

The spelling of 563631 in words is "five hundred sixty-three thousand, six hundred thirty-one".