206664207696 has 60 divisors (see below), whose sum is σ = 578477445312. Its totient is φ = 68875599168.

The previous prime is 206664207677. The next prime is 206664207703. The reversal of 206664207696 is 696702466602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686095 + ... + 940241.

Almost surely, 2^206664207696 is an apocalyptic number.

It is an amenable number.

206664207696 is an abundant number, since it is smaller than the sum of its proper divisors (371813237616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206664207696 is a wasteful number, since it uses less digits than its factorization.

206664207696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259808 (or 259799 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 206664207696 in words is "two hundred six billion, six hundred sixty-four million, two hundred seven thousand, six hundred ninety-six".