6689838 has 8 divisors (see below), whose sum is σ = 13379688. Its totient is φ = 2229944.

The previous prime is 6689821. The next prime is 6689869. The reversal of 6689838 is 8389866.

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

6689838 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557481 + ... + 557492.

It is an arithmetic number, because the mean of its divisors is an integer number (1672461).

Almost surely, 2^6689838 is an apocalyptic number.

6689838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6689838 is a wasteful number, since it uses less digits than its factorization.

6689838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114978.

The product of its digits is 497664, while the sum is 48.

The square root of 6689838 is about 2586.4721146767. The cubic root of 6689838 is about 188.4250042318.

The spelling of 6689838 in words is "six million, six hundred eighty-nine thousand, eight hundred thirty-eight".