206808673 has 8 divisors (see below), whose sum is σ = 218172800. Its totient is φ = 195492528.

The previous prime is 206808661. The next prime is 206808683. The reversal of 206808673 is 376808602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206808673 - 2¹³ = 206800481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206808683) 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 7 ways as a sum of consecutive naturals, for example, 2958 + ... + 20551.

It is an arithmetic number, because the mean of its divisors is an integer number (27271600).

Almost surely, 2^206808673 is an apocalyptic number.

It is an amenable number.

206808673 is a deficient number, since it is larger than the sum of its proper divisors (11364127).

206808673 is a wasteful number, since it uses less digits than its factorization.

206808673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23991.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 206808673 is about 14380.8439599350. The cubic root of 206808673 is about 591.3658607518.

The spelling of 206808673 in words is "two hundred six million, eight hundred eight thousand, six hundred seventy-three".