6682681 has 8 divisors (see below), whose sum is σ = 6930440. Its totient is φ = 6438528.

The previous prime is 6682609. The next prime is 6682693. The reversal of 6682681 is 1862866.

It can be written as a sum of positive squares in 4 ways, for example, as 2310400 + 4372281 = 1520^2 + 2091^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6682681 - 2¹⁹ = 6158393 is a prime.

It is a super-2 number, since 2×6682681² = 89316450695522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6682681.

It is not an unprimeable number, because it can be changed into a prime (6686681) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3205 + ... + 4861.

It is an arithmetic number, because the mean of its divisors is an integer number (866305).

Almost surely, 2^6682681 is an apocalyptic number.

It is an amenable number.

6682681 is a deficient number, since it is larger than the sum of its proper divisors (247759).

6682681 is a wasteful number, since it uses less digits than its factorization.

6682681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its digits is 27648, while the sum is 37.

The square root of 6682681 is about 2585.0881996559. The cubic root of 6682681 is about 188.3577859149.

The spelling of 6682681 in words is "six million, six hundred eighty-two thousand, six hundred eighty-one".