6689081 has 8 divisors (see below), whose sum is σ = 7666944. Its totient is φ = 5716800.

The previous prime is 6689069. The next prime is 6689099. The reversal of 6689081 is 1809866.

6689081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6689081 - 2²² = 2494777 is a prime.

It is a super-2 number, since 2×6689081² = 89487609249122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6689281) 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, 1616 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (958368).

Almost surely, 2^6689081 is an apocalyptic number.

It is an amenable number.

6689081 is a deficient number, since it is larger than the sum of its proper divisors (977863).

6689081 is a wasteful number, since it uses less digits than its factorization.

6689081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 6689081 is about 2586.3257722105. The cubic root of 6689081 is about 188.4178967797.

The spelling of 6689081 in words is "six million, six hundred eighty-nine thousand, eighty-one".