6684681 has 8 divisors (see below), whose sum is σ = 9130464. Its totient is φ = 4347680.

The previous prime is 6684677. The next prime is 6684707. The reversal of 6684681 is 1864866.

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 6684681 - 2² = 6684677 is a prime.

It is a super-2 number, since 2×6684681² = 89369920143522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6684631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27051 + ... + 27296.

It is an arithmetic number, because the mean of its divisors is an integer number (1141308).

Almost surely, 2^6684681 is an apocalyptic number.

It is an amenable number.

6684681 is a deficient number, since it is larger than the sum of its proper divisors (2445783).

6684681 is a wasteful number, since it uses less digits than its factorization.

6684681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54391.

The product of its digits is 55296, while the sum is 39.

The square root of 6684681 is about 2585.4750047138. The cubic root of 6684681 is about 188.3765746813.

The spelling of 6684681 in words is "six million, six hundred eighty-four thousand, six hundred eighty-one".