6681806 has 8 divisors (see below), whose sum is σ = 10550280. Its totient is φ = 3165048.

The previous prime is 6681791. The next prime is 6681817. The reversal of 6681806 is 6081866.

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, 87881 + ... + 87956.

It is an arithmetic number, because the mean of its divisors is an integer number (1318785).

Almost surely, 2^6681806 is an apocalyptic number.

6681806 is a deficient number, since it is larger than the sum of its proper divisors (3868474).

6681806 is a wasteful number, since it uses less digits than its factorization.

6681806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175858.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 6681806 is about 2584.9189542421. The cubic root of 6681806 is about 188.3495646508.

The spelling of 6681806 in words is "six million, six hundred eighty-one thousand, eight hundred six".