206326369 has 2 divisors, whose sum is σ = 206326370. Its totient is φ = 206326368.

The previous prime is 206326349. The next prime is 206326423. The reversal of 206326369 is 963623602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168688144 + 37638225 = 12988^2 + 6135^2 .

It is a cyclic number.

It is not a de Polignac number, because 206326369 - 2⁹ = 206325857 is a prime.

It is a super-2 number, since 2×206326369² = 85141141089448322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206326349) 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, 103163184 + 103163185.

It is an arithmetic number, because the mean of its divisors is an integer number (103163185).

Almost surely, 2^206326369 is an apocalyptic number.

It is an amenable number.

206326369 is a deficient number, since it is larger than the sum of its proper divisors (1).

206326369 is an equidigital number, since it uses as much as digits as its factorization.

206326369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 206326369 is about 14364.0651975685. The cubic root of 206326369 is about 590.9057895738.

The spelling of 206326369 in words is "two hundred six million, three hundred twenty-six thousand, three hundred sixty-nine".