205996223 has 4 divisors (see below), whose sum is σ = 206075520. Its totient is φ = 205916928.

The previous prime is 205996183. The next prime is 205996229. The reversal of 205996223 is 322699502.

205996223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322699502 = 2 ⋅161349751.

It is a cyclic number.

It is not a de Polignac number, because 205996223 - 2¹⁶ = 205930687 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 (205996229) 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, 35615 + ... + 40992.

It is an arithmetic number, because the mean of its divisors is an integer number (51518880).

Almost surely, 2^205996223 is an apocalyptic number.

205996223 is a deficient number, since it is larger than the sum of its proper divisors (79297).

205996223 is an equidigital number, since it uses as much as digits as its factorization.

205996223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79296.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 205996223 is about 14352.5685157745. The cubic root of 205996223 is about 590.5904488359.

The spelling of 205996223 in words is "two hundred five million, nine hundred ninety-six thousand, two hundred twenty-three".