6689602916 has 18 divisors (see below), whose sum is σ = 12355384230. Its totient is φ = 3168758592.

The previous prime is 6689602879. The next prime is 6689602949. The reversal of 6689602916 is 6192069866.

It can be written as a sum of positive squares in only one way, i.e., 5822300416 + 867302500 = 76304^2 + 29450^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2314901 + ... + 2317788.

It is an arithmetic number, because the mean of its divisors is an integer number (686410235).

Almost surely, 2^6689602916 is an apocalyptic number.

It is an amenable number.

6689602916 is a deficient number, since it is larger than the sum of its proper divisors (5665781314).

6689602916 is a wasteful number, since it uses less digits than its factorization.

6689602916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632731 (or 4632710 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The square root of 6689602916 is about 81789.9927619510. The cubic root of 6689602916 is about 1884.2279709200.

The spelling of 6689602916 in words is "six billion, six hundred eighty-nine million, six hundred two thousand, nine hundred sixteen".