6809678 has 4 divisors (see below), whose sum is σ = 10214520. Its totient is φ = 3404838.

The previous prime is 6809669. The next prime is 6809683. The reversal of 6809678 is 8769086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8769086 = 2 ⋅4384543.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702418 + ... + 1702421.

It is an arithmetic number, because the mean of its divisors is an integer number (2553630).

Almost surely, 2^6809678 is an apocalyptic number.

6809678 is a deficient number, since it is larger than the sum of its proper divisors (3404842).

6809678 is a wasteful number, since it uses less digits than its factorization.

6809678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404841.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 6809678 is about 2609.5359740766. The cubic root of 6809678 is about 189.5434838704.

The spelling of 6809678 in words is "six million, eight hundred nine thousand, six hundred seventy-eight".