6659940676 has 12 divisors (see below), whose sum is σ = 12030860800. Its totient is φ = 3222551880.

The previous prime is 6659940673. The next prime is 6659940719. The reversal of 6659940676 is 6760499566.

It is a self number, because there is not a number n which added to its sum of digits gives 6659940676.

It is not an unprimeable number, because it can be changed into a prime (6659940673) 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, 26854476 + ... + 26854723.

Almost surely, 2^6659940676 is an apocalyptic number.

It is an amenable number.

6659940676 is a deficient number, since it is larger than the sum of its proper divisors (5370920124).

6659940676 is a wasteful number, since it uses less digits than its factorization.

6659940676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53709234 (or 53709232 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 58.

The square root of 6659940676 is about 81608.4595860013. The cubic root of 6659940676 is about 1881.4389048305.

The spelling of 6659940676 in words is "six billion, six hundred fifty-nine million, nine hundred forty thousand, six hundred seventy-six".