581441691 has 16 divisors (see below), whose sum is σ = 789949440. Its totient is φ = 380313120.

The previous prime is 581441689. The next prime is 581441699. The reversal of 581441691 is 196144185.

It is not a de Polignac number, because 581441691 - 2¹ = 581441689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (581441699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72886 + ... + 80468.

It is an arithmetic number, because the mean of its divisors is an integer number (49371840).

Almost surely, 2^581441691 is an apocalyptic number.

581441691 is a deficient number, since it is larger than the sum of its proper divisors (208507749).

581441691 is a wasteful number, since it uses less digits than its factorization.

581441691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066.

The product of its digits is 34560, while the sum is 39.

The square root of 581441691 is about 24113.1020609129. The cubic root of 581441691 is about 834.6455000134.

The spelling of 581441691 in words is "five hundred eighty-one million, four hundred forty-one thousand, six hundred ninety-one".