206555339 has 2 divisors, whose sum is σ = 206555340. Its totient is φ = 206555338.

The previous prime is 206555309. The next prime is 206555357. The reversal of 206555339 is 933555602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206555339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206555309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103277669 + 103277670.

It is an arithmetic number, because the mean of its divisors is an integer number (103277670).

Almost surely, 2^206555339 is an apocalyptic number.

206555339 is a deficient number, since it is larger than the sum of its proper divisors (1).

206555339 is an equidigital number, since it uses as much as digits as its factorization.

206555339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121500, while the sum is 38.

The square root of 206555339 is about 14372.0332242867. The cubic root of 206555339 is about 591.1242940087.

The spelling of 206555339 in words is "two hundred six million, five hundred fifty-five thousand, three hundred thirty-nine".