6809918 has 8 divisors (see below), whose sum is σ = 10382520. Its totient is φ = 3349080.

The previous prime is 6809903. The next prime is 6809921. The reversal of 6809918 is 8199086.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27788 + ... + 28031.

It is an arithmetic number, because the mean of its divisors is an integer number (1297815).

Almost surely, 2^6809918 is an apocalyptic number.

6809918 is a deficient number, since it is larger than the sum of its proper divisors (3572602).

6809918 is a wasteful number, since it uses less digits than its factorization.

6809918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55882.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 6809918 is about 2609.5819588585. The cubic root of 6809918 is about 189.5457105984.

The spelling of 6809918 in words is "six million, eight hundred nine thousand, nine hundred eighteen".