641732450 has 12 divisors (see below), whose sum is σ = 1193622450. Its totient is φ = 256692960.

The previous prime is 641732449. The next prime is 641732471. The reversal of 641732450 is 54237146.

It can be written as a sum of positive squares in 3 ways, for example, as 496264729 + 145467721 = 22277^2 + 12061^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6417275 + ... + 6417374.

Almost surely, 2^641732450 is an apocalyptic number.

641732450 is a deficient number, since it is larger than the sum of its proper divisors (551890000).

641732450 is a wasteful number, since it uses less digits than its factorization.

641732450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834661 (or 12834656 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 641732450 is about 25332.4386903433. The cubic root of 641732450 is about 862.5507692582.

Adding to 641732450 its reverse (54237146), we get a palindrome (695969596).

The spelling of 641732450 in words is "six hundred forty-one million, seven hundred thirty-two thousand, four hundred fifty".