6556616 has 16 divisors (see below), whose sum is σ = 13411440. Its totient is φ = 2980240.

The previous prime is 6556609. The next prime is 6556621. The reversal of 6556616 is 6166556.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37166 + ... + 37341.

It is an arithmetic number, because the mean of its divisors is an integer number (838215).

Almost surely, 2^6556616 is an apocalyptic number.

It is an amenable number.

6556616 is an abundant number, since it is smaller than the sum of its proper divisors (6854824).

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

6556616 is a wasteful number, since it uses less digits than its factorization.

6556616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74524 (or 74520 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 6556616 is about 2560.5889947432. The cubic root of 6556616 is about 187.1658379963.

The spelling of 6556616 in words is "six million, five hundred fifty-six thousand, six hundred sixteen".