6886345 has 4 divisors (see below), whose sum is σ = 8263620. Its totient is φ = 5509072.

The previous prime is 6886331. The next prime is 6886349. The reversal of 6886345 is 5436886.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 5112121 = 1332^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 6886345 - 2¹⁵ = 6853577 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6886345 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6886298 and 6886307.

It is not an unprimeable number, because it can be changed into a prime (6886349) 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, 688630 + ... + 688639.

It is an arithmetic number, because the mean of its divisors is an integer number (2065905).

Almost surely, 2^6886345 is an apocalyptic number.

It is an amenable number.

6886345 is a deficient number, since it is larger than the sum of its proper divisors (1377275).

6886345 is a wasteful number, since it uses less digits than its factorization.

6886345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377274.

The product of its digits is 138240, while the sum is 40.

The square root of 6886345 is about 2624.1846352724. The cubic root of 6886345 is about 190.2521582752.

The spelling of 6886345 in words is "six million, eight hundred eighty-six thousand, three hundred forty-five".