6776666776 has 16 divisors (see below), whose sum is σ = 13861364040. Its totient is φ = 3080303040.

The previous prime is 6776666773. The next prime is 6776666779.

6776666776 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (6776666773) and next prime (6776666779).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6776666773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38503701 + ... + 38503876.

Almost surely, 2^6776666776 is an apocalyptic number.

It is an amenable number.

6776666776 is an abundant number, since it is smaller than the sum of its proper divisors (7084697264).

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

6776666776 is a wasteful number, since it uses less digits than its factorization.

6776666776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77007594 (or 77007590 counting only the distinct ones).

The product of its digits is 112021056, while the sum is 64.

The square root of 6776666776 is about 82320.5124862570. The cubic root of 6776666776 is about 1892.3670477878.

The spelling of 6776666776 in words is "six billion, seven hundred seventy-six million, six hundred sixty-six thousand, seven hundred seventy-six".