6887855 has 8 divisors (see below), whose sum is σ = 8901312. Its totient is φ = 5086368.

The previous prime is 6887851. The next prime is 6887863. The reversal of 6887855 is 5587886.

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 6887855 - 2² = 6887851 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 (6887851) 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 7 ways as a sum of consecutive naturals, for example, 52919 + ... + 53048.

It is an arithmetic number, because the mean of its divisors is an integer number (1112664).

Almost surely, 2^6887855 is an apocalyptic number.

6887855 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6887855 is a deficient number, since it is larger than the sum of its proper divisors (2013457).

6887855 is a wasteful number, since it uses less digits than its factorization.

6887855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105985.

The product of its digits is 537600, while the sum is 47.

The square root of 6887855 is about 2624.4723279166. The cubic root of 6887855 is about 190.2660630759.

The spelling of 6887855 in words is "six million, eight hundred eighty-seven thousand, eight hundred fifty-five".