204986897 has 2 divisors, whose sum is σ = 204986898. Its totient is φ = 204986896.

The previous prime is 204986863. The next prime is 204986917. The reversal of 204986897 is 798689402.

204986897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192904321 + 12082576 = 13889^2 + 3476^2 .

It is a cyclic number.

It is not a de Polignac number, because 204986897 - 2¹⁰ = 204985873 is a prime.

It is not a weakly prime, because it can be changed into another prime (204986807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102493448 + 102493449.

It is an arithmetic number, because the mean of its divisors is an integer number (102493449).

Almost surely, 2^204986897 is an apocalyptic number.

It is an amenable number.

204986897 is a deficient number, since it is larger than the sum of its proper divisors (1).

204986897 is an equidigital number, since it uses as much as digits as its factorization.

204986897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 204986897 is about 14317.3634793561. The cubic root of 204986897 is about 589.6242911087.

The spelling of 204986897 in words is "two hundred four million, nine hundred eighty-six thousand, eight hundred ninety-seven".