6684416 has 18 divisors (see below), whose sum is σ = 13343232. Its totient is φ = 3342080.

The previous prime is 6684373. The next prime is 6684443. The reversal of 6684416 is 6144866.

It is a super-2 number, since 2×6684416² = 89362834522112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12800 + ... + 13311.

Almost surely, 2^6684416 is an apocalyptic number.

It is an amenable number.

6684416 is a deficient number, since it is larger than the sum of its proper divisors (6658816).

6684416 is an equidigital number, since it uses as much as digits as its factorization.

6684416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26127 (or 26113 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 6684416 is about 2585.4237563695. The cubic root of 6684416 is about 188.3740853852.

The spelling of 6684416 in words is "six million, six hundred eighty-four thousand, four hundred sixteen".