6778654880 has 96 divisors (see below), whose sum is σ = 16738701840. Its totient is φ = 2590801920.

The previous prime is 6778654879. The next prime is 6778654889. The reversal of 6778654880 is 884568776.

It can be written as a sum of positive squares in 8 ways, for example, as 3804915856 + 2973739024 = 61684^2 + 54532^2 .

It is not an unprimeable number, because it can be changed into a prime (6778654889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442550 + ... + 457610.

Almost surely, 2^6778654880 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 6778654880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8369350920).

6778654880 is an abundant number, since it is smaller than the sum of its proper divisors (9960046960).

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

6778654880 is a wasteful number, since it uses less digits than its factorization.

6778654880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15202 (or 15194 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 59.

The square root of 6778654880 is about 82332.5869871705. The cubic root of 6778654880 is about 1892.5520873639.

The spelling of 6778654880 in words is "six billion, seven hundred seventy-eight million, six hundred fifty-four thousand, eight hundred eighty".