6655688 has 16 divisors (see below), whose sum is σ = 13439580. Its totient is φ = 3071808.

The previous prime is 6655673. The next prime is 6655723. The reversal of 6655688 is 8865566.

It can be written as a sum of positive squares in 2 ways, for example, as 6646084 + 9604 = 2578^2 + 98^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31895 + ... + 32102.

Almost surely, 2^6655688 is an apocalyptic number.

It is an amenable number.

6655688 is an abundant number, since it is smaller than the sum of its proper divisors (6783892).

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

6655688 is a wasteful number, since it uses less digits than its factorization.

6655688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64016 (or 64012 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 6655688 is about 2579.8620118138. The cubic root of 6655688 is about 188.1038358034.

The spelling of 6655688 in words is "six million, six hundred fifty-five thousand, six hundred eighty-eight".