581134864 has 20 divisors (see below), whose sum is σ = 1134547920. Its totient is φ = 288348320.

The previous prime is 581134847. The next prime is 581134867. The reversal of 581134864 is 468431185.

It is not an unprimeable number, because it can be changed into a prime (581134867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136534 + ... + 140725.

It is an arithmetic number, because the mean of its divisors is an integer number (56727396).

Almost surely, 2^581134864 is an apocalyptic number.

It is an amenable number.

581134864 is a deficient number, since it is larger than the sum of its proper divisors (553413056).

581134864 is a wasteful number, since it uses less digits than its factorization.

581134864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277398 (or 277392 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 581134864 is about 24106.7389748178. The cubic root of 581134864 is about 834.4986599327.

The spelling of 581134864 in words is "five hundred eighty-one million, one hundred thirty-four thousand, eight hundred sixty-four".