641311596 has 18 divisors (see below), whose sum is σ = 1621093292. Its totient is φ = 213770520.

The previous prime is 641311577. The next prime is 641311603. The reversal of 641311596 is 695113146.

641311596 is a `hidden beast` number, since 64 + 1 + 3 + 1 + 1 + 596 = 666.

641311596 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×641311596² = 822561126328134432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 17814211 = 641311596 / (6 + 4 + 1 + 3 + 1 + 1 + 5 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 641311596.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8907070 + ... + 8907141.

Almost surely, 2^641311596 is an apocalyptic number.

It is an amenable number.

641311596 is an abundant number, since it is smaller than the sum of its proper divisors (979781696).

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

641311596 is a wasteful number, since it uses less digits than its factorization.

641311596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814221 (or 17814216 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 641311596 is about 25324.1307057123. The cubic root of 641311596 is about 862.3621718009.

The spelling of 641311596 in words is "six hundred forty-one million, three hundred eleven thousand, five hundred ninety-six".