206847161 has 2 divisors, whose sum is σ = 206847162. Its totient is φ = 206847160.

The previous prime is 206847149. The next prime is 206847187. The reversal of 206847161 is 161748602.

206847161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170172025 + 36675136 = 13045^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 206847161 - 2¹⁰ = 206846137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206847761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103423580 + 103423581.

It is an arithmetic number, because the mean of its divisors is an integer number (103423581).

Almost surely, 2^206847161 is an apocalyptic number.

It is an amenable number.

206847161 is a deficient number, since it is larger than the sum of its proper divisors (1).

206847161 is an equidigital number, since it uses as much as digits as its factorization.

206847161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 206847161 is about 14382.1820667102. The cubic root of 206847161 is about 591.4025437353.

The spelling of 206847161 in words is "two hundred six million, eight hundred forty-seven thousand, one hundred sixty-one".