204679 has 2 divisors, whose sum is σ = 204680. Its totient is φ = 204678.

The previous prime is 204667. The next prime is 204707. The reversal of 204679 is 976402.

It is an a-pointer prime, because the next prime (204707) can be obtained adding 204679 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204679 - 2¹⁷ = 73607 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102339 + 102340.

It is an arithmetic number, because the mean of its divisors is an integer number (102340).

2²⁰⁴⁶⁷⁹ is an apocalyptic number.

204679 is a deficient number, since it is larger than the sum of its proper divisors (1).

204679 is an equidigital number, since it uses as much as digits as its factorization.

204679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 204679 is about 452.4146328314. The cubic root of 204679 is about 58.9328931546.

The spelling of 204679 in words is "two hundred four thousand, six hundred seventy-nine".