6886690 has 8 divisors (see below), whose sum is σ = 12396060. Its totient is φ = 2754672.

The previous prime is 6886679. The next prime is 6886727. The reversal of 6886690 is 966886.

It can be written as a sum of positive squares in 2 ways, for example, as 6880129 + 6561 = 2623^2 + 81^2 .

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

It is a super-2 number, since 2×6886690² = 94852998312200, which contains 22 as substring.

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, 344325 + ... + 344344.

Almost surely, 2^6886690 is an apocalyptic number.

6886690 is a deficient number, since it is larger than the sum of its proper divisors (5509370).

6886690 is a wasteful number, since it uses less digits than its factorization.

6886690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688676.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 6886690 is about 2624.2503691531. The cubic root of 6886690 is about 190.2553353790.

The spelling of 6886690 in words is "six million, eight hundred eighty-six thousand, six hundred ninety".