6656636 has 12 divisors (see below), whose sum is σ = 13313328. Its totient is φ = 2852832.

The previous prime is 6656627. The next prime is 6656647. The reversal of 6656636 is 6366566.

6656636 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6656636.

It is a congruent number.

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, 118841 + ... + 118896.

It is an arithmetic number, because the mean of its divisors is an integer number (1109444).

Almost surely, 2^6656636 is an apocalyptic number.

It is an amenable number.

6656636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6656636 is a wasteful number, since it uses less digits than its factorization.

6656636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237748 (or 237746 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 6656636 is about 2580.0457360287. The cubic root of 6656636 is about 188.1127662085.

The spelling of 6656636 in words is "six million, six hundred fifty-six thousand, six hundred thirty-six".