1660644232 has 64 divisors (see below), whose sum is σ = 3605011200. Its totient is φ = 710622720.

The previous prime is 1660644217. The next prime is 1660644233. The reversal of 1660644232 is 2324460661.

It is not an unprimeable number, because it can be changed into a prime (1660644233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83932 + ... + 101812.

It is an arithmetic number, because the mean of its divisors is an integer number (56328300).

Almost surely, 2^1660644232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660644232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802505600).

1660644232 is an abundant number, since it is smaller than the sum of its proper divisors (1944366968).

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

1660644232 is a wasteful number, since it uses less digits than its factorization.

1660644232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966 (or 17962 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 1660644232 is about 40751.0028342862. The cubic root of 1660644232 is about 1184.2013007655.

The spelling of 1660644232 in words is "one billion, six hundred sixty million, six hundred forty-four thousand, two hundred thirty-two".