205230705 has 16 divisors (see below), whose sum is σ = 328603200. Its totient is φ = 109378368.

The previous prime is 205230689. The next prime is 205230731. The reversal of 205230705 is 507032502.

205230705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205230705 - 2⁴ = 205230689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21459 + ... + 29511.

It is an arithmetic number, because the mean of its divisors is an integer number (20537700).

Almost surely, 2^205230705 is an apocalyptic number.

It is an amenable number.

205230705 is a deficient number, since it is larger than the sum of its proper divisors (123372495).

205230705 is a wasteful number, since it uses less digits than its factorization.

205230705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 205230705 is about 14325.8753659244. The cubic root of 205230705 is about 589.8579615946.

The spelling of 205230705 in words is "two hundred five million, two hundred thirty thousand, seven hundred five".