206996717 has 4 divisors (see below), whose sum is σ = 207118716. Its totient is φ = 206874720.

The previous prime is 206996707. The next prime is 206996719. The reversal of 206996717 is 717699602.

206996717 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.

It can be written as a sum of positive squares in 2 ways, for example, as 79103236 + 127893481 = 8894^2 + 11309^2 .

It is a cyclic number.

It is not a de Polignac number, because 206996717 - 2⁶ = 206996653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206996719) 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, 58418 + ... + 61859.

It is an arithmetic number, because the mean of its divisors is an integer number (51779679).

Almost surely, 2^206996717 is an apocalyptic number.

It is an amenable number.

206996717 is a deficient number, since it is larger than the sum of its proper divisors (121999).

206996717 is a wasteful number, since it uses less digits than its factorization.

206996717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121998.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 206996717 is about 14387.3804773489. The cubic root of 206996717 is about 591.5450426546.

The spelling of 206996717 in words is "two hundred six million, nine hundred ninety-six thousand, seven hundred seventeen".