204564197 has 2 divisors, whose sum is σ = 204564198. Its totient is φ = 204564196.

The previous prime is 204564193. The next prime is 204564251. The reversal of 204564197 is 791465402.

204564197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160554241 + 44009956 = 12671^2 + 6634^2 .

It is a cyclic number.

It is not a de Polignac number, because 204564197 - 2² = 204564193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204564197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204564193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102282098 + 102282099.

It is an arithmetic number, because the mean of its divisors is an integer number (102282099).

Almost surely, 2^204564197 is an apocalyptic number.

It is an amenable number.

204564197 is a deficient number, since it is larger than the sum of its proper divisors (1).

204564197 is an equidigital number, since it uses as much as digits as its factorization.

204564197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 204564197 is about 14302.5940654134. The cubic root of 204564197 is about 589.2187274656.

The spelling of 204564197 in words is "two hundred four million, five hundred sixty-four thousand, one hundred ninety-seven".