6879681 has 8 divisors (see below), whose sum is σ = 10192160. Its totient is φ = 4586436.

The previous prime is 6879673. The next prime is 6879683. The reversal of 6879681 is 1869786.

It is a happy number.

6879681 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6879681 - 2³ = 6879673 is a prime.

It is a super-2 number, since 2×6879681² = 94660021323522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6879683) 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, 127375 + ... + 127428.

It is an arithmetic number, because the mean of its divisors is an integer number (1274020).

Almost surely, 2^6879681 is an apocalyptic number.

It is an amenable number.

6879681 is a deficient number, since it is larger than the sum of its proper divisors (3312479).

6879681 is a wasteful number, since it uses less digits than its factorization.

6879681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254812 (or 254806 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 6879681 is about 2622.9146002110. The cubic root of 6879681 is about 190.1907686909.

The spelling of 6879681 in words is "six million, eight hundred seventy-nine thousand, six hundred eighty-one".