205966790 has 32 divisors (see below), whose sum is σ = 393064704. Its totient is φ = 77569920.

The previous prime is 205966769. The next prime is 205966801. The reversal of 205966790 is 97669502.

205966790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 2492 + ... + 20448.

It is an arithmetic number, because the mean of its divisors is an integer number (12283272).

Almost surely, 2^205966790 is an apocalyptic number.

205966790 is a deficient number, since it is larger than the sum of its proper divisors (187097914).

205966790 is a wasteful number, since it uses less digits than its factorization.

205966790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18032.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 205966790 is about 14351.5431226053. The cubic root of 205966790 is about 590.5623193936.

The spelling of 205966790 in words is "two hundred five million, nine hundred sixty-six thousand, seven hundred ninety".