641103456 has 144 divisors (see below), whose sum is σ = 2073069936. Its totient is φ = 172376064.

The previous prime is 641103433. The next prime is 641103457. The reversal of 641103456 is 654301146.

It is a super-2 number, since 2×641103456² = 822027282590287872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641103457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75960 + ... + 83976.

It is an arithmetic number, because the mean of its divisors is an integer number (14396319).

Almost surely, 2^641103456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641103456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036534968).

641103456 is an abundant number, since it is smaller than the sum of its proper divisors (1431966480).

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

641103456 is a wasteful number, since it uses less digits than its factorization.

641103456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061 (or 8046 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 641103456 is about 25320.0208530720. The cubic root of 641103456 is about 862.2688674513.

The spelling of 641103456 in words is "six hundred forty-one million, one hundred three thousand, four hundred fifty-six".