6777327861 has 16 divisors (see below), whose sum is σ = 10072782720. Its totient is φ = 4503684960.

The previous prime is 6777327857. The next prime is 6777327877. The reversal of 6777327861 is 1687237776.

6777327861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6777327861 - 2² = 6777327857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6777327798 and 6777327807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6777327061) 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, 395160 + ... + 411953.

It is an arithmetic number, because the mean of its divisors is an integer number (629548920).

Almost surely, 2^6777327861 is an apocalyptic number.

It is an amenable number.

6777327861 is a deficient number, since it is larger than the sum of its proper divisors (3295454859).

6777327861 is a wasteful number, since it uses less digits than its factorization.

6777327861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807433 (or 807427 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 54.

The square root of 6777327861 is about 82324.5276998295. The cubic root of 6777327861 is about 1892.4285812247.

The spelling of 6777327861 in words is "six billion, seven hundred seventy-seven million, three hundred twenty-seven thousand, eight hundred sixty-one".