205079 has 4 divisors (see below), whose sum is σ = 234384. Its totient is φ = 175776.

The previous prime is 205069. The next prime is 205081. The reversal of 205079 is 970502.

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

It is a cyclic number.

It is not a de Polignac number, because 205079 - 2⁴ = 205063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205019) 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, 14642 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (58596).

2²⁰⁵⁰⁷⁹ is an apocalyptic number.

205079 is a deficient number, since it is larger than the sum of its proper divisors (29305).

205079 is an equidigital number, since it uses as much as digits as its factorization.

205079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29304.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 205079 is about 452.8564894092. The cubic root of 205079 is about 58.9712586240.

The spelling of 205079 in words is "two hundred five thousand, seventy-nine".