641532752 has 20 divisors (see below), whose sum is σ = 1420537056. Its totient is φ = 274942560.

The previous prime is 641532733. The next prime is 641532779. The reversal of 641532752 is 257235146.

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, 2863874 + ... + 2864097.

Almost surely, 2^641532752 is an apocalyptic number.

It is an amenable number.

641532752 is an abundant number, since it is smaller than the sum of its proper divisors (779004304).

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

641532752 is a wasteful number, since it uses less digits than its factorization.

641532752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727986 (or 5727980 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 641532752 is about 25328.4968365673. The cubic root of 641532752 is about 862.4612888038.

Adding to 641532752 its reverse (257235146), we get a palindrome (898767898).

The spelling of 641532752 in words is "six hundred forty-one million, five hundred thirty-two thousand, seven hundred fifty-two".