206204497 has 2 divisors, whose sum is σ = 206204498. Its totient is φ = 206204496.

The previous prime is 206204491. The next prime is 206204501. The reversal of 206204497 is 794402602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204947856 + 1256641 = 14316^2 + 1121^2 .

It is a cyclic number.

It is not a de Polignac number, because 206204497 - 2³ = 206204489 is a prime.

It is not a weakly prime, because it can be changed into another prime (206204491) 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, 103102248 + 103102249.

It is an arithmetic number, because the mean of its divisors is an integer number (103102249).

Almost surely, 2^206204497 is an apocalyptic number.

It is an amenable number.

206204497 is a deficient number, since it is larger than the sum of its proper divisors (1).

206204497 is an equidigital number, since it uses as much as digits as its factorization.

206204497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 206204497 is about 14359.8223178422. The cubic root of 206204497 is about 590.7894220690.

The spelling of 206204497 in words is "two hundred six million, two hundred four thousand, four hundred ninety-seven".