6699386016 has 288 divisors, whose sum is σ = 21107278080. Its totient is φ = 2066052096.

The previous prime is 6699385999. The next prime is 6699386021. The reversal of 6699386016 is 6106839966.

It is a tau number, because it is divible by the number of its divisors (288).

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14659260 + ... + 14659716.

It is an arithmetic number, because the mean of its divisors is an integer number (73289160).

Almost surely, 2^6699386016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6699386016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10553639040).

6699386016 is an abundant number, since it is smaller than the sum of its proper divisors (14407892064).

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

6699386016 is a wasteful number, since it uses less digits than its factorization.

6699386016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 6699386016 is about 81849.7771285909. Note that the first 3 decimals coincide. The cubic root of 6699386016 is about 1885.1460429501.

The spelling of 6699386016 in words is "six billion, six hundred ninety-nine million, three hundred eighty-six thousand, sixteen".