6678347648 has 128 divisors (see below), whose sum is σ = 15730848000. Its totient is φ = 2764615680.

The previous prime is 6678347633. The next prime is 6678347653. The reversal of 6678347648 is 8467438766.

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

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3929903 + ... + 3931601.

It is an arithmetic number, because the mean of its divisors is an integer number (122897250).

Almost surely, 2^6678347648 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 6678347648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7865424000).

6678347648 is an abundant number, since it is smaller than the sum of its proper divisors (9052500352).

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

6678347648 is a wasteful number, since it uses less digits than its factorization.

6678347648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868 (or 1856 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 59.

The square root of 6678347648 is about 81721.1578968384. The cubic root of 6678347648 is about 1883.1706388152.

The spelling of 6678347648 in words is "six billion, six hundred seventy-eight million, three hundred forty-seven thousand, six hundred forty-eight".