206806608406 has 8 divisors (see below), whose sum is σ = 313055875440. Its totient is φ = 102454649928.

The previous prime is 206806608391. The next prime is 206806608451. The reversal of 206806608406 is 604806608602.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474326866 + ... + 474327301.

It is an arithmetic number, because the mean of its divisors is an integer number (39131984430).

Almost surely, 2^206806608406 is an apocalyptic number.

206806608406 is a deficient number, since it is larger than the sum of its proper divisors (106249267034).

206806608406 is a wasteful number, since it uses less digits than its factorization.

206806608406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948654278.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 206806608406 in words is "two hundred six billion, eight hundred six million, six hundred eight thousand, four hundred six".