641565532 has 12 divisors (see below), whose sum is σ = 1123046680. Its totient is φ = 320695056.

The previous prime is 641565527. The next prime is 641565563. The reversal of 641565532 is 235565146.

641565532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 641565491 and 641565500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3807 + ... + 36022.

Almost surely, 2^641565532 is an apocalyptic number.

It is an amenable number.

641565532 is a deficient number, since it is larger than the sum of its proper divisors (481481148).

641565532 is a wasteful number, since it uses less digits than its factorization.

641565532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43860 (or 43858 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 641565532 is about 25329.1439255258. The cubic root of 641565532 is about 862.4759781029.

The spelling of 641565532 in words is "six hundred forty-one million, five hundred sixty-five thousand, five hundred thirty-two".