6689000 has 32 divisors (see below), whose sum is σ = 15654600. Its totient is φ = 2675200.

The previous prime is 6688999. The next prime is 6689029. The reversal of 6689000 is 9866.

It can be written as a sum of positive squares in 4 ways, for example, as 3147076 + 3541924 = 1774^2 + 1882^2 .

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 7 ways as a sum of consecutive naturals, for example, 2345 + ... + 4344.

Almost surely, 2^6689000 is an apocalyptic number.

It is an amenable number.

6689000 is an abundant number, since it is smaller than the sum of its proper divisors (8965600).

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

6689000 is a wasteful number, since it uses less digits than its factorization.

6689000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710 (or 6696 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 6689000 is about 2586.3101128828. The cubic root of 6689000 is about 188.4171362412.

The spelling of 6689000 in words is "six million, six hundred eighty-nine thousand".