6885385 has 8 divisors (see below), whose sum is σ = 8898120. Its totient is φ = 5084544.

The previous prime is 6885377. The next prime is 6885401. The reversal of 6885385 is 5835886.

It can be written as a sum of positive squares in 4 ways, for example, as 1024144 + 5861241 = 1012^2 + 2421^2 .

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 6885385 - 2³ = 6885377 is a prime.

It is a d-powerful number, because it can be written as 6 + 8³ + 8⁴ + 5² + 3¹⁴ + 8⁷ + 5⁴ .

6885385 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52900 + ... + 53029.

It is an arithmetic number, because the mean of its divisors is an integer number (1112265).

Almost surely, 2^6885385 is an apocalyptic number.

6885385 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6885385 is a deficient number, since it is larger than the sum of its proper divisors (2012735).

6885385 is a wasteful number, since it uses less digits than its factorization.

6885385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105947.

The product of its digits is 230400, while the sum is 43.

The square root of 6885385 is about 2624.0017149385. The cubic root of 6885385 is about 190.2433170801.

The spelling of 6885385 in words is "six million, eight hundred eighty-five thousand, three hundred eighty-five".