581676256 has 108 divisors (see below), whose sum is σ = 1401093288. Its totient is φ = 236573568.

The previous prime is 581676253. The next prime is 581676257. The reversal of 581676256 is 652676185.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581676253) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4580065 + ... + 4580191.

It is an arithmetic number, because the mean of its divisors is an integer number (12973086).

Almost surely, 2^581676256 is an apocalyptic number.

581676256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 581676256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700546644).

581676256 is an abundant number, since it is smaller than the sum of its proper divisors (819417032).

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

581676256 is a wasteful number, since it uses less digits than its factorization.

581676256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 159 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 581676256 is about 24117.9654199935. The cubic root of 581676256 is about 834.7577223874.

Multiplying 581676256 by its sum of digits (46), we get a square (26757107776 = 163576²).

581676256 divided by its sum of digits (46) gives a square (12645136 = 3556²).

The spelling of 581676256 in words is "five hundred eighty-one million, six hundred seventy-six thousand, two hundred fifty-six".