206871073 has 2 divisors, whose sum is σ = 206871074. Its totient is φ = 206871072.

The previous prime is 206870981. The next prime is 206871097. The reversal of 206871073 is 370178602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206439424 + 431649 = 14368^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 206871073 - 2⁹ = 206870561 is a prime.

It is not a weakly prime, because it can be changed into another prime (206871173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103435536 + 103435537.

It is an arithmetic number, because the mean of its divisors is an integer number (103435537).

Almost surely, 2^206871073 is an apocalyptic number.

It is an amenable number.

206871073 is a deficient number, since it is larger than the sum of its proper divisors (1).

206871073 is an equidigital number, since it uses as much as digits as its factorization.

206871073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 206871073 is about 14383.0133490865. The cubic root of 206871073 is about 591.4253320148.

The spelling of 206871073 in words is "two hundred six million, eight hundred seventy-one thousand, seventy-three".