641434732 has 12 divisors (see below), whose sum is σ = 1138321296. Its totient is φ = 316200080.

The previous prime is 641434723. The next prime is 641434777. The reversal of 641434732 is 237434146.

It is a super-2 number, since 2×641434732² = 822877030831823648, which contains 22 as substring.

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, 1129003 + ... + 1129570.

It is an arithmetic number, because the mean of its divisors is an integer number (94860108).

Almost surely, 2^641434732 is an apocalyptic number.

It is an amenable number.

641434732 is a deficient number, since it is larger than the sum of its proper divisors (496886564).

641434732 is a wasteful number, since it uses less digits than its factorization.

641434732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258648 (or 2258646 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 641434732 is about 25326.5617879727. The cubic root of 641434732 is about 862.4173613186.

Adding to 641434732 its reverse (237434146), we get a palindrome (878868878).

The spelling of 641434732 in words is "six hundred forty-one million, four hundred thirty-four thousand, seven hundred thirty-two".