641789832 has 32 divisors (see below), whose sum is σ = 1605300480. Its totient is φ = 213819840.

The previous prime is 641789821. The next prime is 641789833. The reversal of 641789832 is 238987146.

It is not an unprimeable number, because it can be changed into a prime (641789833) 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 7 ways as a sum of consecutive naturals, for example, 50473 + ... + 61895.

It is an arithmetic number, because the mean of its divisors is an integer number (50165640).

Almost surely, 2^641789832 is an apocalyptic number.

It is an amenable number.

641789832 is an abundant number, since it is smaller than the sum of its proper divisors (963510648).

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

641789832 is a wasteful number, since it uses less digits than its factorization.

641789832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13773 (or 13769 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 641789832 is about 25333.5712444969. The cubic root of 641789832 is about 862.5764774866.

The spelling of 641789832 in words is "six hundred forty-one million, seven hundred eighty-nine thousand, eight hundred thirty-two".