6855665 has 8 divisors (see below), whose sum is σ = 8242560. Its totient is φ = 5474032.

The previous prime is 6855659. The next prime is 6855671. The reversal of 6855665 is 5665586.

It is an interprime number because it is at equal distance from previous prime (6855659) and next prime (6855671).

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 6855665 - 2¹⁰ = 6854641 is a prime.

It is an unprimeable number.

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, 2642 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (1030320).

Almost surely, 2^6855665 is an apocalyptic number.

It is an amenable number.

6855665 is a deficient number, since it is larger than the sum of its proper divisors (1386895).

6855665 is a wasteful number, since it uses less digits than its factorization.

6855665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631.

The product of its digits is 216000, while the sum is 41.

The square root of 6855665 is about 2618.3324846169. The cubic root of 6855665 is about 189.9692009172.

The spelling of 6855665 in words is "six million, eight hundred fifty-five thousand, six hundred sixty-five".