6661964232 has 640 divisors, whose sum is σ = 24756019200. Its totient is φ = 1623628800.

The previous prime is 6661964227. The next prime is 6661964297. The reversal of 6661964232 is 2324691666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 91259748 + ... + 91259820.

It is an arithmetic number, because the mean of its divisors is an integer number (38681280).

Almost surely, 2^6661964232 is an apocalyptic number.

6661964232 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6661964232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12378009600).

6661964232 is an abundant number, since it is smaller than the sum of its proper divisors (18094054968).

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

6661964232 is a wasteful number, since it uses less digits than its factorization.

6661964232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 186 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 6661964232 is about 81620.8565992786. The cubic root of 6661964232 is about 1881.6294376316.

The spelling of 6661964232 in words is "six billion, six hundred sixty-one million, nine hundred sixty-four thousand, two hundred thirty-two".