6647990232 has 64 divisors (see below), whose sum is σ = 18314714880. Its totient is φ = 1997960832.

The previous prime is 6647990231. The next prime is 6647990243. The reversal of 6647990232 is 2320997466.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647990231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234348 + ... + 261179.

It is an arithmetic number, because the mean of its divisors is an integer number (286167420).

Almost surely, 2^6647990232 is an apocalyptic number.

It is an amenable number.

6647990232 is an abundant number, since it is smaller than the sum of its proper divisors (11666724648).

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

6647990232 is a wasteful number, since it uses less digits than its factorization.

6647990232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495592 (or 495588 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 6647990232 is about 81535.2085420771. The cubic root of 6647990232 is about 1880.3128942015.

The spelling of 6647990232 in words is "six billion, six hundred forty-seven million, nine hundred ninety thousand, two hundred thirty-two".