563813 has 2 divisors, whose sum is σ = 563814. Its totient is φ = 563812.

The previous prime is 563809. The next prime is 563821. The reversal of 563813 is 318365.

563813 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368449 + 195364 = 607^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 563813 - 2² = 563809 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281906 + 281907.

It is an arithmetic number, because the mean of its divisors is an integer number (281907).

2⁵⁶³⁸¹³ is an apocalyptic number.

It is an amenable number.

563813 is a deficient number, since it is larger than the sum of its proper divisors (1).

563813 is an equidigital number, since it uses as much as digits as its factorization.

563813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 563813 is about 750.8748231230. The cubic root of 563813 is about 82.6123599121.

The spelling of 563813 in words is "five hundred sixty-three thousand, eight hundred thirteen".