204704057 has 4 divisors (see below), whose sum is σ = 205046400. Its totient is φ = 204361716.

The previous prime is 204704053. The next prime is 204704077. The reversal of 204704057 is 750407402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204704057 - 2² = 204704053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204704053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170273 + ... + 171470.

It is an arithmetic number, because the mean of its divisors is an integer number (51261600).

Almost surely, 2^204704057 is an apocalyptic number.

It is an amenable number.

204704057 is a deficient number, since it is larger than the sum of its proper divisors (342343).

204704057 is an equidigital number, since it uses as much as digits as its factorization.

204704057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342342.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 204704057 is about 14307.4825528463. The cubic root of 204704057 is about 589.3529793024.

The spelling of 204704057 in words is "two hundred four million, seven hundred four thousand, fifty-seven".