205979896 has 8 divisors (see below), whose sum is σ = 386212320. Its totient is φ = 102989944.

The previous prime is 205979867. The next prime is 205979923. The reversal of 205979896 is 698979502.

205979896 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12873736 + ... + 12873751.

It is an arithmetic number, because the mean of its divisors is an integer number (48276540).

Almost surely, 2^205979896 is an apocalyptic number.

It is an amenable number.

205979896 is a deficient number, since it is larger than the sum of its proper divisors (180232424).

205979896 is a wasteful number, since it uses less digits than its factorization.

205979896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25747493 (or 25747489 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 205979896 is about 14351.9997212932. Note that the first 3 decimals coincide. The cubic root of 205979896 is about 590.5748452731.

The spelling of 205979896 in words is "two hundred five million, nine hundred seventy-nine thousand, eight hundred ninety-six".