6778706478 has 8 divisors (see below), whose sum is σ = 13557412968. Its totient is φ = 2259568824.

The previous prime is 6778706447. The next prime is 6778706483. The reversal of 6778706478 is 8746078776.

It is a sphenic number, since it is the product of 3 distinct primes.

6778706478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564892201 + ... + 564892212.

It is an arithmetic number, because the mean of its divisors is an integer number (1694676621).

Almost surely, 2^6778706478 is an apocalyptic number.

6778706478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6778706478 is a wasteful number, since it uses less digits than its factorization.

6778706478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129784418.

The product of its (nonzero) digits is 22127616, while the sum is 60.

The square root of 6778706478 is about 82332.9003375929. The cubic root of 6778706478 is about 1892.5568892829.

The spelling of 6778706478 in words is "six billion, seven hundred seventy-eight million, seven hundred six thousand, four hundred seventy-eight".