205862 has 4 divisors (see below), whose sum is σ = 308796. Its totient is φ = 102930.

The previous prime is 205847. The next prime is 205879. The reversal of 205862 is 268502.

It is a happy number.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 205862.

It is an unprimeable number.

205862 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51464 + ... + 51467.

It is an arithmetic number, because the mean of its divisors is an integer number (77199).

2²⁰⁵⁸⁶² is an apocalyptic number.

205862 is a deficient number, since it is larger than the sum of its proper divisors (102934).

205862 is a wasteful number, since it uses less digits than its factorization.

205862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102933.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 205862 is about 453.7201780834. The cubic root of 205862 is about 59.0462148676.

The spelling of 205862 in words is "two hundred five thousand, eight hundred sixty-two".