204667 has 2 divisors, whose sum is σ = 204668. Its totient is φ = 204666.

The previous prime is 204641. The next prime is 204679. The reversal of 204667 is 766402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204667 is a prime.

It is not a weakly prime, because it can be changed into another prime (204067) 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 as a sum of consecutive naturals, namely, 102333 + 102334.

It is an arithmetic number, because the mean of its divisors is an integer number (102334).

2²⁰⁴⁶⁶⁷ is an apocalyptic number.

204667 is a deficient number, since it is larger than the sum of its proper divisors (1).

204667 is an equidigital number, since it uses as much as digits as its factorization.

204667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 204667 is about 452.4013704665. The cubic root of 204667 is about 58.9317414185.

The spelling of 204667 in words is "two hundred four thousand, six hundred sixty-seven".