6681814 has 4 divisors (see below), whose sum is σ = 10022724. Its totient is φ = 3340906.

The previous prime is 6681791. The next prime is 6681817. The reversal of 6681814 is 4181866.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6681814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670452 + ... + 1670455.

It is an arithmetic number, because the mean of its divisors is an integer number (2505681).

Almost surely, 2^6681814 is an apocalyptic number.

6681814 is a deficient number, since it is larger than the sum of its proper divisors (3340910).

6681814 is a wasteful number, since it uses less digits than its factorization.

6681814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340909.

The product of its digits is 9216, while the sum is 34.

The square root of 6681814 is about 2584.9205016789. The cubic root of 6681814 is about 188.3496398199.

The spelling of 6681814 in words is "six million, six hundred eighty-one thousand, eight hundred fourteen".