563841 has 10 divisors (see below), whose sum is σ = 842402. Its totient is φ = 375840.

The previous prime is 563837. The next prime is 563851. The reversal of 563841 is 148365.

It can be written as a sum of positive squares in only one way, i.e., 531441 + 32400 = 729^2 + 180^2 .

It is not a de Polignac number, because 563841 - 2² = 563837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

563841 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (563821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3400 + ... + 3561.

2⁵⁶³⁸⁴¹ is an apocalyptic number.

It is an amenable number.

563841 is a deficient number, since it is larger than the sum of its proper divisors (278561).

563841 is an equidigital number, since it uses as much as digits as its factorization.

563841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973 (or 6964 counting only the distinct ones).

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

The square root of 563841 is about 750.8934678102. The cubic root of 563841 is about 82.6137274505.

The spelling of 563841 in words is "five hundred sixty-three thousand, eight hundred forty-one".