6663706836 has 24 divisors (see below), whose sum is σ = 15626788800. Its totient is φ = 2210072832.

The previous prime is 6663706813. The next prime is 6663706871. The reversal of 6663706836 is 6386073666.

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 7 ways as a sum of consecutive naturals, for example, 1392861 + ... + 1397636.

It is an arithmetic number, because the mean of its divisors is an integer number (651116200).

Almost surely, 2^6663706836 is an apocalyptic number.

It is an amenable number.

6663706836 is an abundant number, since it is smaller than the sum of its proper divisors (8963081964).

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

6663706836 is a wasteful number, since it uses less digits than its factorization.

6663706836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790703 (or 2790701 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 51.

The square root of 6663706836 is about 81631.5308933993. The cubic root of 6663706836 is about 1881.7934858020.

The spelling of 6663706836 in words is "six billion, six hundred sixty-three million, seven hundred six thousand, eight hundred thirty-six".