6643932 has 24 divisors (see below), whose sum is σ = 15549072. Its totient is φ = 2208000.

The previous prime is 6643919. The next prime is 6643969. The reversal of 6643932 is 2393466.

It is a junction number, because it is equal to n+sod(n) for n = 6643893 and 6643902.

It is a congruent number.

It is an unprimeable number.

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, 4932 + ... + 6132.

It is an arithmetic number, because the mean of its divisors is an integer number (647878).

Almost surely, 2^6643932 is an apocalyptic number.

It is an amenable number.

6643932 is an abundant number, since it is smaller than the sum of its proper divisors (8905140).

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

6643932 is a wasteful number, since it uses less digits than its factorization.

6643932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1667 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The square root of 6643932 is about 2577.5825883956. The cubic root of 6643932 is about 187.9930207157.

The spelling of 6643932 in words is "six million, six hundred forty-three thousand, nine hundred thirty-two".