6691891200 has 288 divisors, whose sum is σ = 23296946400. Its totient is φ = 1689845760.

The previous prime is 6691891163. The next prime is 6691891243. The reversal of 6691891200 is 21981966.

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 23 ways as a sum of consecutive naturals, for example, 2917254 + ... + 2919546.

It is an arithmetic number, because the mean of its divisors is an integer number (80892175).

Almost surely, 2^6691891200 is an apocalyptic number.

6691891200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6691891200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11648473200).

6691891200 is an abundant number, since it is smaller than the sum of its proper divisors (16605055200).

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

6691891200 is a wasteful number, since it uses less digits than its factorization.

6691891200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347 (or 2322 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 6691891200 is about 81803.9803432571. The cubic root of 6691891200 is about 1884.4427897089.

The spelling of 6691891200 in words is "six billion, six hundred ninety-one million, eight hundred ninety-one thousand, two hundred".