6866799744 has 128 divisors (see below), whose sum is σ = 20884377600. Its totient is φ = 1958298624.

The previous prime is 6866799733. The next prime is 6866799791. The reversal of 6866799744 is 4479976686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661809 + ... + 1665935.

It is an arithmetic number, because the mean of its divisors is an integer number (163159200).

Almost surely, 2^6866799744 is an apocalyptic number.

6866799744 is a gapful number since it is divisible by the number (64) 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 6866799744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10442188800).

6866799744 is an abundant number, since it is smaller than the sum of its proper divisors (14017577856).

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

6866799744 is a wasteful number, since it uses less digits than its factorization.

6866799744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770 (or 4758 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 66.

The square root of 6866799744 is about 82866.1556004621. The cubic root of 6866799744 is about 1900.7199251488.

The spelling of 6866799744 in words is "six billion, eight hundred sixty-six million, seven hundred ninety-nine thousand, seven hundred forty-four".