6786979 has 8 divisors (see below), whose sum is σ = 6918912. Its totient is φ = 6656520.

The previous prime is 6786943. The next prime is 6787019. The reversal of 6786979 is 9796876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6786979 - 2⁹ = 6786467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6786919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13242 + ... + 13744.

It is an arithmetic number, because the mean of its divisors is an integer number (864864).

Almost surely, 2^6786979 is an apocalyptic number.

6786979 is a deficient number, since it is larger than the sum of its proper divisors (131933).

6786979 is a wasteful number, since it uses less digits than its factorization.

6786979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737.

The product of its digits is 1143072, while the sum is 52.

The square root of 6786979 is about 2605.1831029699. The cubic root of 6786979 is about 189.3326448789.

The spelling of 6786979 in words is "six million, seven hundred eighty-six thousand, nine hundred seventy-nine".