6639604032 has 28 divisors (see below), whose sum is σ = 17567286176. Its totient is φ = 2213201280.

The previous prime is 6639604019. The next prime is 6639604033. The reversal of 6639604032 is 2304069366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6639604033) 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 3 ways as a sum of consecutive naturals, for example, 17290444 + ... + 17290827.

Almost surely, 2^6639604032 is an apocalyptic number.

It is an amenable number.

6639604032 is an abundant number, since it is smaller than the sum of its proper divisors (10927682144).

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

6639604032 is a wasteful number, since it uses less digits than its factorization.

6639604032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34581286 (or 34581276 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 39.

The square root of 6639604032 is about 81483.7654505485. The cubic root of 6639604032 is about 1879.5219125347.

The spelling of 6639604032 in words is "six billion, six hundred thirty-nine million, six hundred four thousand, thirty-two".