205669223 has 2 divisors, whose sum is σ = 205669224. Its totient is φ = 205669222.

The previous prime is 205669207. The next prime is 205669237. The reversal of 205669223 is 322966502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205669223 - 2⁴ = 205669207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205668223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102834611 + 102834612.

It is an arithmetic number, because the mean of its divisors is an integer number (102834612).

Almost surely, 2^205669223 is an apocalyptic number.

205669223 is a deficient number, since it is larger than the sum of its proper divisors (1).

205669223 is an equidigital number, since it uses as much as digits as its factorization.

205669223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 205669223 is about 14341.1723021516. The cubic root of 205669223 is about 590.2777807159.

The spelling of 205669223 in words is "two hundred five million, six hundred sixty-nine thousand, two hundred twenty-three".