6685845 has 32 divisors (see below), whose sum is σ = 11467008. Its totient is φ = 3314688.

The previous prime is 6685843. The next prime is 6685859. The reversal of 6685845 is 5485866.

It is not a de Polignac number, because 6685845 - 2¹ = 6685843 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6685797 and 6685806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39952 + ... + 40118.

It is an arithmetic number, because the mean of its divisors is an integer number (358344).

Almost surely, 2^6685845 is an apocalyptic number.

It is an amenable number.

6685845 is a deficient number, since it is larger than the sum of its proper divisors (4781163).

6685845 is a wasteful number, since it uses less digits than its factorization.

6685845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 230400, while the sum is 42.

The square root of 6685845 is about 2585.7000986193. The cubic root of 6685845 is about 188.3875080182.

The spelling of 6685845 in words is "six million, six hundred eighty-five thousand, eight hundred forty-five".