6689090 has 32 divisors (see below), whose sum is σ = 12718080. Its totient is φ = 2528064.

The previous prime is 6689069. The next prime is 6689099. The reversal of 6689090 is 909866.

It is not an unprimeable number, because it can be changed into a prime (6689099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29096 + ... + 29324.

It is an arithmetic number, because the mean of its divisors is an integer number (397440).

Almost surely, 2^6689090 is an apocalyptic number.

6689090 is a deficient number, since it is larger than the sum of its proper divisors (6028990).

6689090 is a wasteful number, since it uses less digits than its factorization.

6689090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 6689090 is about 2586.3275121299. The cubic root of 6689090 is about 188.4179812836.

The spelling of 6689090 in words is "six million, six hundred eighty-nine thousand, ninety".