206996889 has 16 divisors (see below), whose sum is σ = 310800384. Its totient is φ = 121405200.

The previous prime is 206996873. The next prime is 206996891. The reversal of 206996889 is 988699602.

It is not a de Polignac number, because 206996889 - 2⁴ = 206996873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206996869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100149 + ... + 102194.

It is an arithmetic number, because the mean of its divisors is an integer number (19425024).

Almost surely, 2^206996889 is an apocalyptic number.

It is an amenable number.

206996889 is a deficient number, since it is larger than the sum of its proper divisors (103803495).

206996889 is a wasteful number, since it uses less digits than its factorization.

206996889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202388.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 206996889 is about 14387.3864548083. The cubic root of 206996889 is about 591.5452064989.

The spelling of 206996889 in words is "two hundred six million, nine hundred ninety-six thousand, eight hundred eighty-nine".