581478 has 16 divisors (see below), whose sum is σ = 1171200. Its totient is φ = 192456.

The previous prime is 581473. The next prime is 581491. The reversal of 581478 is 874185.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 581478.

It is not an unprimeable number, because it can be changed into a prime (581473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (73200).

2⁵⁸¹⁴⁷⁸ is an apocalyptic number.

581478 is an abundant number, since it is smaller than the sum of its proper divisors (589722).

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

581478 is a wasteful number, since it uses less digits than its factorization.

581478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 8960, while the sum is 33.

The square root of 581478 is about 762.5470477289. The cubic root of 581478 is about 83.4662873216.

The spelling of 581478 in words is "five hundred eighty-one thousand, four hundred seventy-eight".