205845213 has 8 divisors (see below), whose sum is σ = 313668928. Its totient is φ = 117625824.

The previous prime is 205845187. The next prime is 205845217. The reversal of 205845213 is 312548502.

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

It is not a de Polignac number, because 205845213 - 2⁶ = 205845149 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 (205845217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4901056 + ... + 4901097.

It is an arithmetic number, because the mean of its divisors is an integer number (39208616).

Almost surely, 2^205845213 is an apocalyptic number.

It is an amenable number.

205845213 is a deficient number, since it is larger than the sum of its proper divisors (107823715).

205845213 is an equidigital number, since it uses as much as digits as its factorization.

205845213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9802163.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 205845213 is about 14347.3068204454. The cubic root of 205845213 is about 590.4460985103.

The spelling of 205845213 in words is "two hundred five million, eight hundred forty-five thousand, two hundred thirteen".