205281668 has 12 divisors (see below), whose sum is σ = 360064320. Its totient is φ = 102406152.

The previous prime is 205281649. The next prime is 205281673. The reversal of 205281668 is 866182502.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56696 + ... + 60207.

It is an arithmetic number, because the mean of its divisors is an integer number (30005360).

Almost surely, 2^205281668 is an apocalyptic number.

It is an amenable number.

205281668 is a deficient number, since it is larger than the sum of its proper divisors (154782652).

205281668 is a wasteful number, since it uses less digits than its factorization.

205281668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117346 (or 117344 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 205281668 is about 14327.6539600871. The cubic root of 205281668 is about 589.9067821701.

The spelling of 205281668 in words is "two hundred five million, two hundred eighty-one thousand, six hundred sixty-eight".