205264823 has 2 divisors, whose sum is σ = 205264824. Its totient is φ = 205264822.

The previous prime is 205264799. The next prime is 205264853. The reversal of 205264823 is 328462502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205264823 - 2²⁰ = 204216247 is a prime.

It is a super-2 number, since 2×205264823² = 84267295122442658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205264823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205264853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102632411 + 102632412.

It is an arithmetic number, because the mean of its divisors is an integer number (102632412).

Almost surely, 2^205264823 is an apocalyptic number.

205264823 is a deficient number, since it is larger than the sum of its proper divisors (1).

205264823 is an equidigital number, since it uses as much as digits as its factorization.

205264823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 205264823 is about 14327.0660988215. The cubic root of 205264823 is about 589.8906462082.

The spelling of 205264823 in words is "two hundred five million, two hundred sixty-four thousand, eight hundred twenty-three".