6636393 has 12 divisors (see below), whose sum is σ = 9680320. Its totient is φ = 4380696.

The previous prime is 6636359. The next prime is 6636433. The reversal of 6636393 is 3936366.

It is not a de Polignac number, because 6636393 - 2¹³ = 6628201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636293) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2653 + ... + 4506.

Almost surely, 2^6636393 is an apocalyptic number.

It is an amenable number.

6636393 is a deficient number, since it is larger than the sum of its proper divisors (3043927).

6636393 is a wasteful number, since it uses less digits than its factorization.

6636393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7268 (or 7265 counting only the distinct ones).

The product of its digits is 52488, while the sum is 36.

The square root of 6636393 is about 2576.1197565331. The cubic root of 6636393 is about 187.9218873470.

It can be divided in two parts, 663 and 6393, that added together give a square (7056 = 84²).

The spelling of 6636393 in words is "six million, six hundred thirty-six thousand, three hundred ninety-three".