6685416 has 96 divisors (see below), whose sum is σ = 19874400. Its totient is φ = 2099520.

The previous prime is 6685409. The next prime is 6685447. The reversal of 6685416 is 6145866.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36846 + ... + 37026.

It is an arithmetic number, because the mean of its divisors is an integer number (207025).

Almost surely, 2^6685416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6685416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9937200).

6685416 is an abundant number, since it is smaller than the sum of its proper divisors (13188984).

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

6685416 is a wasteful number, since it uses less digits than its factorization.

6685416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 205 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 6685416 is about 2585.6171410323. The cubic root of 6685416 is about 188.3834786113.

It can be divided in two parts, 668 and 5416, that added together give a square (6084 = 78²).

The spelling of 6685416 in words is "six million, six hundred eighty-five thousand, four hundred sixteen".