206707689 has 12 divisors (see below), whose sum is σ = 299683072. Its totient is φ = 137295000.

The previous prime is 206707681. The next prime is 206707717. The reversal of 206707689 is 986707602.

It is a happy number.

206707689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206707689 - 2³ = 206707681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206707681) 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, 39937 + ... + 44814.

Almost surely, 2^206707689 is an apocalyptic number.

It is an amenable number.

206707689 is a deficient number, since it is larger than the sum of its proper divisors (92975383).

206707689 is a wasteful number, since it uses less digits than its factorization.

206707689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85028 (or 85025 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 206707689 is about 14377.3324716374. The cubic root of 206707689 is about 591.2695910742.

The spelling of 206707689 in words is "two hundred six million, seven hundred seven thousand, six hundred eighty-nine".