6680394 has 80 divisors (see below), whose sum is σ = 17633088. Its totient is φ = 1850688.

The previous prime is 6680389. The next prime is 6680413. The reversal of 6680394 is 4930866.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48694 + ... + 48830.

Almost surely, 2^6680394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6680394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8816544).

6680394 is an abundant number, since it is smaller than the sum of its proper divisors (10952694).

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

6680394 is a wasteful number, since it uses less digits than its factorization.

6680394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6680394 is about 2584.6458171285. The cubic root of 6680394 is about 188.3362963657.

The spelling of 6680394 in words is "six million, six hundred eighty thousand, three hundred ninety-four".