6988664016 has 40 divisors (see below), whose sum is σ = 20060055360. Its totient is φ = 2329554528.

The previous prime is 6988664009. The next prime is 6988664083. The reversal of 6988664016 is 6104668896.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 8088300 + ... + 8089163.

It is an arithmetic number, because the mean of its divisors is an integer number (501501384).

Almost surely, 2^6988664016 is an apocalyptic number.

It is an amenable number.

6988664016 is an abundant number, since it is smaller than the sum of its proper divisors (13071391344).

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

6988664016 is a wasteful number, since it uses less digits than its factorization.

6988664016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16177480 (or 16177468 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 6988664016 is about 83598.2297420226. The cubic root of 6988664016 is about 1911.8980078413.

The spelling of 6988664016 in words is "six billion, nine hundred eighty-eight million, six hundred sixty-four thousand, sixteen".