641650404 has 24 divisors (see below), whose sum is σ = 1548812160. Its totient is φ = 206508064.

The previous prime is 641650391. The next prime is 641650421. The reversal of 641650404 is 404056146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921564 + ... + 922259.

It is an arithmetic number, because the mean of its divisors is an integer number (64533840).

Almost surely, 2^641650404 is an apocalyptic number.

It is an amenable number.

641650404 is an abundant number, since it is smaller than the sum of its proper divisors (907161756).

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

641650404 is a wasteful number, since it uses less digits than its factorization.

641650404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843859 (or 1843857 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 641650404 is about 25330.8192524442. The cubic root of 641650404 is about 862.5140084261.

The spelling of 641650404 in words is "six hundred forty-one million, six hundred fifty thousand, four hundred four".