6779847 has 4 divisors (see below), whose sum is σ = 9039800. Its totient is φ = 4519896.

The previous prime is 6779837. The next prime is 6779849. The reversal of 6779847 is 7489776.

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

It is not a de Polignac number, because 6779847 - 2⁶ = 6779783 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6779796 and 6779805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779849) 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, 1129972 + ... + 1129977.

It is an arithmetic number, because the mean of its divisors is an integer number (2259950).

Almost surely, 2^6779847 is an apocalyptic number.

6779847 is a deficient number, since it is larger than the sum of its proper divisors (2259953).

6779847 is a wasteful number, since it uses less digits than its factorization.

6779847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259952.

The product of its digits is 592704, while the sum is 48.

The square root of 6779847 is about 2603.8139334446. The cubic root of 6779847 is about 189.2663024661.

It can be divided in two parts, 6779 and 847, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 6779847 in words is "six million, seven hundred seventy-nine thousand, eight hundred forty-seven".