6609216 has 56 divisors (see below), whose sum is σ = 18105120. Its totient is φ = 2125312.

The previous prime is 6609191. The next prime is 6609221. The reversal of 6609216 is 6129066.

It is a super-2 number, since 2×6609216² = 87363472269312, 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 in 7 ways as a sum of consecutive naturals, for example, 4975 + ... + 6161.

Almost surely, 2^6609216 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 6609216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9052560).

6609216 is an abundant number, since it is smaller than the sum of its proper divisors (11495904).

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

6609216 is a wasteful number, since it uses less digits than its factorization.

6609216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 6609216 is about 2570.8395515862. The cubic root of 6609216 is about 187.6650138441.

The spelling of 6609216 in words is "six million, six hundred nine thousand, two hundred sixteen".