6663844376 has 24 divisors (see below), whose sum is σ = 14534661420. Its totient is φ = 2855933136.

The previous prime is 6663844367. The next prime is 6663844391. The reversal of 6663844376 is 6734483666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8499410 + ... + 8500193.

Almost surely, 2^6663844376 is an apocalyptic number.

It is an amenable number.

6663844376 is an abundant number, since it is smaller than the sum of its proper divisors (7870817044).

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

6663844376 is a wasteful number, since it uses less digits than its factorization.

6663844376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16999623 (or 16999612 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 53.

The square root of 6663844376 is about 81632.3733331330. The cubic root of 6663844376 is about 1881.8064325548.

The spelling of 6663844376 in words is "six billion, six hundred sixty-three million, eight hundred forty-four thousand, three hundred seventy-six".