6844855 has 4 divisors (see below), whose sum is σ = 8213832. Its totient is φ = 5475880.

The previous prime is 6844853. The next prime is 6844861. The reversal of 6844855 is 5584486.

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

It is not a de Polignac number, because 6844855 - 2¹ = 6844853 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.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6844853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684481 + ... + 684490.

It is an arithmetic number, because the mean of its divisors is an integer number (2053458).

Almost surely, 2^6844855 is an apocalyptic number.

6844855 is a deficient number, since it is larger than the sum of its proper divisors (1368977).

6844855 is a wasteful number, since it uses less digits than its factorization.

6844855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368976.

The product of its digits is 153600, while the sum is 40.

The square root of 6844855 is about 2616.2673793020. The cubic root of 6844855 is about 189.8693006954.

The spelling of 6844855 in words is "six million, eight hundred forty-four thousand, eight hundred fifty-five".