641110856 has 32 divisors (see below), whose sum is σ = 1214801280. Its totient is φ = 317179200.

The previous prime is 641110849. The next prime is 641110861. The reversal of 641110856 is 658011146.

It is a super-2 number, since 2×641110856² = 822046259362105472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482465 + ... + 483791.

It is an arithmetic number, because the mean of its divisors is an integer number (37962540).

Almost surely, 2^641110856 is an apocalyptic number.

It is an amenable number.

641110856 is a deficient number, since it is larger than the sum of its proper divisors (573690424).

641110856 is a wasteful number, since it uses less digits than its factorization.

641110856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 641110856 is about 25320.1669820718. The cubic root of 641110856 is about 862.2721850464.

The spelling of 641110856 in words is "six hundred forty-one million, one hundred ten thousand, eight hundred fifty-six".