206434871 has 2 divisors, whose sum is σ = 206434872. Its totient is φ = 206434870.

The previous prime is 206434853. The next prime is 206434889. The reversal of 206434871 is 178434602.

It is a balanced prime because it is at equal distance from previous prime (206434853) and next prime (206434889).

It is a cyclic number.

It is not a de Polignac number, because 206434871 - 2⁶ = 206434807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206434831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103217435 + 103217436.

It is an arithmetic number, because the mean of its divisors is an integer number (103217436).

Almost surely, 2^206434871 is an apocalyptic number.

206434871 is a deficient number, since it is larger than the sum of its proper divisors (1).

206434871 is an equidigital number, since it uses as much as digits as its factorization.

206434871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 206434871 is about 14367.8415567544. The cubic root of 206434871 is about 591.0093523981.

The spelling of 206434871 in words is "two hundred six million, four hundred thirty-four thousand, eight hundred seventy-one".