205340165 has 16 divisors (see below), whose sum is σ = 250563456. Its totient is φ = 161515200.

The previous prime is 205340147. The next prime is 205340183. The reversal of 205340165 is 561043502.

205340165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (205340147) and next prime (205340183).

It is not a de Polignac number, because 205340165 - 2⁸ = 205339909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202199 + ... + 203211.

It is an arithmetic number, because the mean of its divisors is an integer number (15660216).

Almost surely, 2^205340165 is an apocalyptic number.

It is an amenable number.

205340165 is a deficient number, since it is larger than the sum of its proper divisors (45223291).

205340165 is a wasteful number, since it uses less digits than its factorization.

205340165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 205340165 is about 14329.6952165774. The cubic root of 205340165 is about 589.9628100661.

Adding to 205340165 its reverse (561043502), we get a palindrome (766383667).

The spelling of 205340165 in words is "two hundred five million, three hundred forty thousand, one hundred sixty-five".