206308071 has 12 divisors (see below), whose sum is σ = 300348672. Its totient is φ = 136454976.

The previous prime is 206308049. The next prime is 206308087. The reversal of 206308071 is 170803602.

206308071 is a `hidden beast` number, since 20 + 630 + 8 + 0 + 7 + 1 = 666.

It is not a de Polignac number, because 206308071 - 2¹⁰ = 206307047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206307071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89106 + ... + 91391.

It is an arithmetic number, because the mean of its divisors is an integer number (25029056).

Almost surely, 2^206308071 is an apocalyptic number.

206308071 is a deficient number, since it is larger than the sum of its proper divisors (94040601).

206308071 is a wasteful number, since it uses less digits than its factorization.

206308071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180630 (or 180627 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 206308071 is about 14363.4282467662. The cubic root of 206308071 is about 590.8883209490. Note that the first 3 decimals are identical.

The spelling of 206308071 in words is "two hundred six million, three hundred eight thousand, seventy-one".