6685131 has 16 divisors (see below), whose sum is σ = 9936000. Its totient is φ = 3973248.

The previous prime is 6685127. The next prime is 6685141. The reversal of 6685131 is 1315866.

It is not a de Polignac number, because 6685131 - 2² = 6685127 is a prime.

It is a super-2 number, since 2×6685131² = 89381952974322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2481 + ... + 4418.

It is an arithmetic number, because the mean of its divisors is an integer number (621000).

Almost surely, 2^6685131 is an apocalyptic number.

6685131 is a deficient number, since it is larger than the sum of its proper divisors (3250869).

6685131 is a wasteful number, since it uses less digits than its factorization.

6685131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938.

The product of its digits is 4320, while the sum is 30.

The square root of 6685131 is about 2585.5620278771. The cubic root of 6685131 is about 188.3808016373.

The spelling of 6685131 in words is "six million, six hundred eighty-five thousand, one hundred thirty-one".