204068857 has 4 divisors (see below), whose sum is σ = 212941440. Its totient is φ = 195196276.

The previous prime is 204068831. The next prime is 204068869. The reversal of 204068857 is 758860402.

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 204068857 - 2²⁷ = 69851129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204068057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4436257 + ... + 4436302.

It is an arithmetic number, because the mean of its divisors is an integer number (53235360).

Almost surely, 2^204068857 is an apocalyptic number.

It is an amenable number.

204068857 is a deficient number, since it is larger than the sum of its proper divisors (8872583).

204068857 is an equidigital number, since it uses as much as digits as its factorization.

204068857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8872582.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 204068857 is about 14285.2671308590. The cubic root of 204068857 is about 588.7427570808.

The spelling of 204068857 in words is "two hundred four million, sixty-eight thousand, eight hundred fifty-seven".