6855409 has 8 divisors (see below), whose sum is σ = 7872480. Its totient is φ = 5904000.

The previous prime is 6855379. The next prime is 6855413. The reversal of 6855409 is 9045586.

6855409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6855409 - 2⁵ = 6855377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6855419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16192 + ... + 16609.

It is an arithmetic number, because the mean of its divisors is an integer number (984060).

Almost surely, 2^6855409 is an apocalyptic number.

It is an amenable number.

6855409 is a deficient number, since it is larger than the sum of its proper divisors (1017071).

6855409 is a wasteful number, since it uses less digits than its factorization.

6855409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32831.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 6855409 is about 2618.2835980848. The cubic root of 6855409 is about 189.9668363170.

The spelling of 6855409 in words is "six million, eight hundred fifty-five thousand, four hundred nine".