6691838 has 16 divisors (see below), whose sum is σ = 10626000. Its totient is φ = 3151872.

The previous prime is 6691801. The next prime is 6691843. The reversal of 6691838 is 8381966.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6691795 and 6691804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8318 + ... + 9086.

It is an arithmetic number, because the mean of its divisors is an integer number (664125).

Almost surely, 2^6691838 is an apocalyptic number.

6691838 is a deficient number, since it is larger than the sum of its proper divisors (3934162).

6691838 is a wasteful number, since it uses less digits than its factorization.

6691838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its digits is 62208, while the sum is 41.

The square root of 6691838 is about 2586.8587128021. The cubic root of 6691838 is about 188.4437795972.

The spelling of 6691838 in words is "six million, six hundred ninety-one thousand, eight hundred thirty-eight".