204868487 has 2 divisors, whose sum is σ = 204868488. Its totient is φ = 204868486.

The previous prime is 204868481. The next prime is 204868529. The reversal of 204868487 is 784868402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204868487 - 2⁴ = 204868471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204868481) 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, 102434243 + 102434244.

It is an arithmetic number, because the mean of its divisors is an integer number (102434244).

Almost surely, 2^204868487 is an apocalyptic number.

204868487 is a deficient number, since it is larger than the sum of its proper divisors (1).

204868487 is an equidigital number, since it uses as much as digits as its factorization.

204868487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 204868487 is about 14313.2276932913. The cubic root of 204868487 is about 589.5107377371.

The spelling of 204868487 in words is "two hundred four million, eight hundred sixty-eight thousand, four hundred eighty-seven".