205994 has 8 divisors (see below), whose sum is σ = 311808. Its totient is φ = 102060.

The previous prime is 205993. The next prime is 206009. The reversal of 205994 is 499502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (205991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (38976).

2²⁰⁵⁹⁹⁴ is an apocalyptic number.

205994 is a deficient number, since it is larger than the sum of its proper divisors (105814).

205994 is a wasteful number, since it uses less digits than its factorization.

205994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 205994 is about 453.8656188785. The cubic root of 205994 is about 59.0588324384.

The spelling of 205994 in words is "two hundred five thousand, nine hundred ninety-four".