6853405 has 8 divisors (see below), whose sum is σ = 8856792. Its totient is φ = 5060928.

The previous prime is 6853391. The next prime is 6853409. The reversal of 6853405 is 5043586.

6853405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 191844 + 6661561 = 438^2 + 2581^2 .

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 6853405 - 2²¹ = 4756253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6853409) 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 7 ways as a sum of consecutive naturals, for example, 52654 + ... + 52783.

It is an arithmetic number, because the mean of its divisors is an integer number (1107099).

Almost surely, 2^6853405 is an apocalyptic number.

6853405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6853405 is a deficient number, since it is larger than the sum of its proper divisors (2003387).

6853405 is a wasteful number, since it uses less digits than its factorization.

6853405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105455.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 6853405 is about 2617.9008766567. The cubic root of 6853405 is about 189.9483238966.

The spelling of 6853405 in words is "six million, eight hundred fifty-three thousand, four hundred five".