206788969 has 4 divisors (see below), whose sum is σ = 218953044. Its totient is φ = 194624896.

The previous prime is 206788961. The next prime is 206789017. The reversal of 206788969 is 969887602.

206788969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969887602 = 2 ⋅484943801.

It can be written as a sum of positive squares in 2 ways, for example, as 94322944 + 112466025 = 9712^2 + 10605^2 .

It is a cyclic number.

It is not a de Polignac number, because 206788969 - 2³ = 206788961 is a prime.

It is a super-2 number, since 2×206788969² = 85523355400165922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206788961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6082012 + ... + 6082045.

It is an arithmetic number, because the mean of its divisors is an integer number (54738261).

Almost surely, 2^206788969 is an apocalyptic number.

It is an amenable number.

206788969 is a deficient number, since it is larger than the sum of its proper divisors (12164075).

206788969 is a wasteful number, since it uses less digits than its factorization.

206788969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12164074.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 206788969 is about 14380.1588656037. The cubic root of 206788969 is about 591.3470790717.

The spelling of 206788969 in words is "two hundred six million, seven hundred eighty-eight thousand, nine hundred sixty-nine".