6639852 has 24 divisors (see below), whose sum is σ = 15560496. Its totient is φ = 2203648.

The previous prime is 6639851. The next prime is 6639863. The reversal of 6639852 is 2589366.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6639852.

It is not an unprimeable number, because it can be changed into a prime (6639851) 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 7 ways as a sum of consecutive naturals, for example, 2008 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (648354).

Almost surely, 2^6639852 is an apocalyptic number.

It is an amenable number.

6639852 is an abundant number, since it is smaller than the sum of its proper divisors (8920644).

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

6639852 is a wasteful number, since it uses less digits than its factorization.

6639852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417 (or 2415 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 6639852 is about 2576.7910276155. The cubic root of 6639852 is about 187.9545310290.

The spelling of 6639852 in words is "six million, six hundred thirty-nine thousand, eight hundred fifty-two".