632513641 has 4 divisors (see below), whose sum is σ = 632599632. Its totient is φ = 632427652.

The previous prime is 632513633. The next prime is 632513657. The reversal of 632513641 is 146315236.

632513641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 632513641 - 2³ = 632513633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632513681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30811 + ... + 47056.

It is an arithmetic number, because the mean of its divisors is an integer number (158149908).

Almost surely, 2^632513641 is an apocalyptic number.

It is an amenable number.

632513641 is a deficient number, since it is larger than the sum of its proper divisors (85991).

632513641 is an equidigital number, since it uses as much as digits as its factorization.

632513641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85990.

The product of its digits is 12960, while the sum is 31.

The square root of 632513641 is about 25149.8238761229. The cubic root of 632513641 is about 858.4005067945.

Adding to 632513641 its reverse (146315236), we get a palindrome (778828877).

The spelling of 632513641 in words is "six hundred thirty-two million, five hundred thirteen thousand, six hundred forty-one".