6779191 has 4 divisors (see below), whose sum is σ = 6860952. Its totient is φ = 6697432.

The previous prime is 6779189. The next prime is 6779197. The reversal of 6779191 is 1919776.

6779191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6779191 - 2¹ = 6779189 is a prime.

It is a super-2 number, since 2×6779191² = 91914861228962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40756 + ... + 40921.

It is an arithmetic number, because the mean of its divisors is an integer number (1715238).

Almost surely, 2^6779191 is an apocalyptic number.

6779191 is a deficient number, since it is larger than the sum of its proper divisors (81761).

6779191 is an equidigital number, since it uses as much as digits as its factorization.

6779191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81760.

The product of its digits is 23814, while the sum is 40.

The square root of 6779191 is about 2603.6879613348. The cubic root of 6779191 is about 189.2601979675.

The spelling of 6779191 in words is "six million, seven hundred seventy-nine thousand, one hundred ninety-one".