6855445 has 4 divisors (see below), whose sum is σ = 8226540. Its totient is φ = 5484352.

The previous prime is 6855419. The next prime is 6855451. The reversal of 6855445 is 5445586.

6855445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2566404 + 4289041 = 1602^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 6855445 - 2⁵ = 6855413 is a prime.

It is a super-2 number, since 2×6855445² = 93994252296050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 685540 + ... + 685549.

It is an arithmetic number, because the mean of its divisors is an integer number (2056635).

Almost surely, 2^6855445 is an apocalyptic number.

It is an amenable number.

6855445 is a deficient number, since it is larger than the sum of its proper divisors (1371095).

6855445 is a wasteful number, since it uses less digits than its factorization.

6855445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371094.

The product of its digits is 96000, while the sum is 37.

The square root of 6855445 is about 2618.2904728085. The cubic root of 6855445 is about 189.9671688425.

The spelling of 6855445 in words is "six million, eight hundred fifty-five thousand, four hundred forty-five".