204648289 has 2 divisors, whose sum is σ = 204648290. Its totient is φ = 204648288.

The previous prime is 204648277. The next prime is 204648347. The reversal of 204648289 is 982846402.

204648289 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., 183331600 + 21316689 = 13540^2 + 4617^2 .

It is a cyclic number.

It is not a de Polignac number, because 204648289 - 2⁷ = 204648161 is a prime.

It is not a weakly prime, because it can be changed into another prime (204648239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102324144 + 102324145.

It is an arithmetic number, because the mean of its divisors is an integer number (102324145).

Almost surely, 2^204648289 is an apocalyptic number.

It is an amenable number.

204648289 is a deficient number, since it is larger than the sum of its proper divisors (1).

204648289 is an equidigital number, since it uses as much as digits as its factorization.

204648289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 204648289 is about 14305.5335097996. The cubic root of 204648289 is about 589.2994548428.

The spelling of 204648289 in words is "two hundred four million, six hundred forty-eight thousand, two hundred eighty-nine".