581643412 has 48 divisors (see below), whose sum is σ = 1236840192. Its totient is φ = 233925120.

The previous prime is 581643379. The next prime is 581643443. The reversal of 581643412 is 214346185.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 25612 + ... + 42652.

It is an arithmetic number, because the mean of its divisors is an integer number (25767504).

Almost surely, 2^581643412 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 581643412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618420096).

581643412 is an abundant number, since it is smaller than the sum of its proper divisors (655196780).

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

581643412 is a wasteful number, since it uses less digits than its factorization.

581643412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17128 (or 17126 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 581643412 is about 24117.2845071745. The cubic root of 581643412 is about 834.7420107274.

Adding to 581643412 its reverse (214346185), we get a palindrome (795989597).

The spelling of 581643412 in words is "five hundred eighty-one million, six hundred forty-three thousand, four hundred twelve".