804000563 has 2 divisors, whose sum is σ = 804000564. Its totient is φ = 804000562.

The previous prime is 804000559. The next prime is 804000583. The reversal of 804000563 is 365000408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 804000563 - 2² = 804000559 is a prime.

It is not a weakly prime, because it can be changed into another prime (804000583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402000281 + 402000282.

It is an arithmetic number, because the mean of its divisors is an integer number (402000282).

Almost surely, 2^804000563 is an apocalyptic number.

804000563 is a deficient number, since it is larger than the sum of its proper divisors (1).

804000563 is an equidigital number, since it uses as much as digits as its factorization.

804000563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 804000563 is about 28354.9036852535. The cubic root of 804000563 is about 929.8626085241.

The spelling of 804000563 in words is "eight hundred four million, five hundred sixty-three", and thus it is an aban number.