6778837408 has 48 divisors (see below), whose sum is σ = 15283949184. Its totient is φ = 2899203840.

The previous prime is 6778837399. The next prime is 6778837411. The reversal of 6778837408 is 8047388776.

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, 78018 + ... + 140158.

It is an arithmetic number, because the mean of its divisors is an integer number (318415608).

Almost surely, 2^6778837408 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 6778837408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7641974592).

6778837408 is an abundant number, since it is smaller than the sum of its proper divisors (8505111776).

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

6778837408 is a wasteful number, since it uses less digits than its factorization.

6778837408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62645 (or 62637 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 58.

The square root of 6778837408 is about 82333.6954593926. The cubic root of 6778837408 is about 1892.5690740500.

The spelling of 6778837408 in words is "six billion, seven hundred seventy-eight million, eight hundred thirty-seven thousand, four hundred eight".