6686290 has 32 divisors (see below), whose sum is σ = 13648320. Its totient is φ = 2337984.

The previous prime is 6686279. The next prime is 6686299. The reversal of 6686290 is 926866.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686299) 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, 1117 + ... + 3823.

It is an arithmetic number, because the mean of its divisors is an integer number (426510).

Almost surely, 2^6686290 is an apocalyptic number.

6686290 is an abundant number, since it is smaller than the sum of its proper divisors (6962030).

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

6686290 is a wasteful number, since it uses less digits than its factorization.

6686290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 6686290 is about 2585.7861473834. The cubic root of 6686290 is about 188.3916875238.

The spelling of 6686290 in words is "six million, six hundred eighty-six thousand, two hundred ninety".