6809247744 has 112 divisors (see below), whose sum is σ = 19554486672. Its totient is φ = 2095054848.

The previous prime is 6809247691. The next prime is 6809247799. The reversal of 6809247744 is 4477429086.

It is a happy number.

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, 308832 + ... + 330144.

It is an arithmetic number, because the mean of its divisors is an integer number (174593631).

Almost surely, 2^6809247744 is an apocalyptic number.

6809247744 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 6809247744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9777243336).

6809247744 is an abundant number, since it is smaller than the sum of its proper divisors (12745238928).

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

6809247744 is a wasteful number, since it uses less digits than its factorization.

6809247744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21355 (or 21331 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The square root of 6809247744 is about 82518.1661454010. The cubic root of 6809247744 is about 1895.3949180994.

The spelling of 6809247744 in words is "six billion, eight hundred nine million, two hundred forty-seven thousand, seven hundred forty-four".