6685404 has 24 divisors (see below), whose sum is σ = 17017728. Its totient is φ = 2025840.

The previous prime is 6685391. The next prime is 6685409. The reversal of 6685404 is 4045866.

It is a happy number.

6685404 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25192 + ... + 25455.

It is an arithmetic number, because the mean of its divisors is an integer number (709072).

Almost surely, 2^6685404 is an apocalyptic number.

It is an amenable number.

6685404 is an abundant number, since it is smaller than the sum of its proper divisors (10332324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6685404 is a wasteful number, since it uses less digits than its factorization.

6685404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50665 (or 50663 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 6685404 is about 2585.6148205021. The cubic root of 6685404 is about 188.3833658981.

The spelling of 6685404 in words is "six million, six hundred eighty-five thousand, four hundred four".