643933050 has 24 divisors (see below), whose sum is σ = 1596954336. Its totient is φ = 171715440.

The previous prime is 643933049. The next prime is 643933061. The reversal of 643933050 is 50339346.

643933050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2146294 + ... + 2146593.

It is an arithmetic number, because the mean of its divisors is an integer number (66539764).

Almost surely, 2^643933050 is an apocalyptic number.

643933050 is an abundant number, since it is smaller than the sum of its proper divisors (953021286).

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

643933050 is a wasteful number, since it uses less digits than its factorization.

643933050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292902 (or 4292897 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 643933050 is about 25375.8359468215. The cubic root of 643933050 is about 863.5355844966.

The spelling of 643933050 in words is "six hundred forty-three million, nine hundred thirty-three thousand, fifty".