206166071 has 2 divisors, whose sum is σ = 206166072. Its totient is φ = 206166070.

The previous prime is 206166067. The next prime is 206166073. The reversal of 206166071 is 170661602.

206166071 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 is a cyclic number.

It is not a de Polignac number, because 206166071 - 2² = 206166067 is a prime.

It is a super-4 number, since 4×206166071⁴ (a number of 34 digits) contains 4444 as substring.

It is a Sophie Germain prime.

Together with 206166073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206166073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103083035 + 103083036.

It is an arithmetic number, because the mean of its divisors is an integer number (103083036).

Almost surely, 2^206166071 is an apocalyptic number.

206166071 is a deficient number, since it is larger than the sum of its proper divisors (1).

206166071 is an equidigital number, since it uses as much as digits as its factorization.

206166071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 206166071 is about 14358.4842863026. The cubic root of 206166071 is about 590.7527221183.

The spelling of 206166071 in words is "two hundred six million, one hundred sixty-six thousand, seventy-one".