204664441 has 2 divisors, whose sum is σ = 204664442. Its totient is φ = 204664440.

The previous prime is 204664433. The next prime is 204664457. The reversal of 204664441 is 144466402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204604416 + 60025 = 14304^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 204664441 - 2³ = 204664433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204661441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102332220 + 102332221.

It is an arithmetic number, because the mean of its divisors is an integer number (102332221).

Almost surely, 2^204664441 is an apocalyptic number.

It is an amenable number.

204664441 is a deficient number, since it is larger than the sum of its proper divisors (1).

204664441 is an equidigital number, since it uses as much as digits as its factorization.

204664441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 204664441 is about 14306.0980354533. The cubic root of 204664441 is about 589.3149580499.

The spelling of 204664441 in words is "two hundred four million, six hundred sixty-four thousand, four hundred forty-one".