641085884 has 12 divisors (see below), whose sum is σ = 1125231744. Its totient is φ = 319591104.

The previous prime is 641085853. The next prime is 641085937. The reversal of 641085884 is 488580146.

641085884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641085884² = 821982221328122912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236444 + ... + 239139.

It is an arithmetic number, because the mean of its divisors is an integer number (93769312).

Almost surely, 2^641085884 is an apocalyptic number.

It is an amenable number.

641085884 is a deficient number, since it is larger than the sum of its proper divisors (484145860).

641085884 is a wasteful number, since it uses less digits than its factorization.

641085884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475924 (or 475922 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 641085884 is about 25319.6738525598. The cubic root of 641085884 is about 862.2609894056.

The spelling of 641085884 in words is "six hundred forty-one million, eighty-five thousand, eight hundred eighty-four".