6685115 has 4 divisors (see below), whose sum is σ = 8022144. Its totient is φ = 5348088.

The previous prime is 6685043. The next prime is 6685117. The reversal of 6685115 is 5115866.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6685115 - 2¹⁰ = 6684091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6685117) 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 3 ways as a sum of consecutive naturals, for example, 668507 + ... + 668516.

It is an arithmetic number, because the mean of its divisors is an integer number (2005536).

Almost surely, 2^6685115 is an apocalyptic number.

6685115 is a deficient number, since it is larger than the sum of its proper divisors (1337029).

6685115 is a wasteful number, since it uses less digits than its factorization.

6685115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337028.

The product of its digits is 7200, while the sum is 32.

The square root of 6685115 is about 2585.5589337704. The cubic root of 6685115 is about 188.3806513488.

It can be divided in two parts, 66851 and 15, that added together give a palindrome (66866).

The spelling of 6685115 in words is "six million, six hundred eighty-five thousand, one hundred fifteen".