6663990676 has 12 divisors (see below), whose sum is σ = 13327981408. Its totient is φ = 2855995992.

The previous prime is 6663990673. The next prime is 6663990677. The reversal of 6663990676 is 6760993666.

6663990676 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 6663990676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663990673) 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, 118999806 + ... + 118999861.

Almost surely, 2^6663990676 is an apocalyptic number.

It is an amenable number.

6663990676 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6663990676 is a wasteful number, since it uses less digits than its factorization.

6663990676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237999678 (or 237999676 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 58.

The square root of 6663990676 is about 81633.2694187854. The cubic root of 6663990676 is about 1881.8202036981.

It can be divided in two parts, 6663990 and 676, that added together give a palindrome (6664666).

The spelling of 6663990676 in words is "six billion, six hundred sixty-three million, nine hundred ninety thousand, six hundred seventy-six".