6686411 has 4 divisors (see below), whose sum is σ = 6799800. Its totient is φ = 6573024.

The previous prime is 6686363. The next prime is 6686413. The reversal of 6686411 is 1146866.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6686411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6686413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56606 + ... + 56723.

It is an arithmetic number, because the mean of its divisors is an integer number (1699950).

Almost surely, 2^6686411 is an apocalyptic number.

6686411 is a deficient number, since it is larger than the sum of its proper divisors (113389).

6686411 is a wasteful number, since it uses less digits than its factorization.

6686411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113388.

The product of its digits is 6912, while the sum is 32.

The square root of 6686411 is about 2585.8095444174. The cubic root of 6686411 is about 188.3928239416.

The spelling of 6686411 in words is "six million, six hundred eighty-six thousand, four hundred eleven".