205000563 has 4 divisors (see below), whose sum is σ = 273334088. Its totient is φ = 136667040.

The previous prime is 205000559. The next prime is 205000567. The reversal of 205000563 is 365000502.

205000563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (205000559) and next prime (205000567).

It is not a de Polignac number, because 205000563 - 2² = 205000559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205000567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34166758 + ... + 34166763.

It is an arithmetic number, because the mean of its divisors is an integer number (68333522).

Almost surely, 2^205000563 is an apocalyptic number.

205000563 is a deficient number, since it is larger than the sum of its proper divisors (68333525).

205000563 is an equidigital number, since it uses as much as digits as its factorization.

205000563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68333524.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 205000563 is about 14317.8407240757. The cubic root of 205000563 is about 589.6373937779.

The spelling of 205000563 in words is "two hundred five million, five hundred sixty-three", and thus it is an aban number.