6838665 has 16 divisors (see below), whose sum is σ = 11012928. Its totient is φ = 3623616.

The previous prime is 6838633. The next prime is 6838681. The reversal of 6838665 is 5668386.

It is not a de Polignac number, because 6838665 - 2⁵ = 6838633 is a prime.

6838665 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047 + ... + 3843.

It is an arithmetic number, because the mean of its divisors is an integer number (688308).

Almost surely, 2^6838665 is an apocalyptic number.

It is an amenable number.

6838665 is a deficient number, since it is larger than the sum of its proper divisors (4174263).

6838665 is a wasteful number, since it uses less digits than its factorization.

6838665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968.

The product of its digits is 207360, while the sum is 42.

The square root of 6838665 is about 2615.0841286658. The cubic root of 6838665 is about 189.8120486703.

It can be divided in two parts, 6838 and 665, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 6838665 in words is "six million, eight hundred thirty-eight thousand, six hundred sixty-five".