6774865855 has 16 divisors (see below), whose sum is σ = 8514653184. Its totient is φ = 5165091360.

The previous prime is 6774865849. The next prime is 6774865861. The reversal of 6774865855 is 5585684776.

It is an interprime number because it is at equal distance from previous prime (6774865849) and next prime (6774865861).

It is not a de Polignac number, because 6774865855 - 2⁹ = 6774865343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6774865793 and 6774865802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77529 + ... + 139858.

It is an arithmetic number, because the mean of its divisors is an integer number (532165824).

Almost surely, 2^6774865855 is an apocalyptic number.

6774865855 is a deficient number, since it is larger than the sum of its proper divisors (1739787329).

6774865855 is a wasteful number, since it uses less digits than its factorization.

6774865855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217686.

The product of its digits is 56448000, while the sum is 61.

The square root of 6774865855 is about 82309.5732888951. The cubic root of 6774865855 is about 1892.1993987252.

The spelling of 6774865855 in words is "six billion, seven hundred seventy-four million, eight hundred sixty-five thousand, eight hundred fifty-five".