206813671 has 2 divisors, whose sum is σ = 206813672. Its totient is φ = 206813670.

The previous prime is 206813647. The next prime is 206813743. The reversal of 206813671 is 176318602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206813671 - 2²⁵ = 173259239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206813641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103406835 + 103406836.

It is an arithmetic number, because the mean of its divisors is an integer number (103406836).

Almost surely, 2^206813671 is an apocalyptic number.

206813671 is a deficient number, since it is larger than the sum of its proper divisors (1).

206813671 is an equidigital number, since it uses as much as digits as its factorization.

206813671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 206813671 is about 14381.0177317184. The cubic root of 206813671 is about 591.3706246119.

The spelling of 206813671 in words is "two hundred six million, eight hundred thirteen thousand, six hundred seventy-one".