581994 has 48 divisors (see below), whose sum is σ = 1497600. Its totient is φ = 159840.

The previous prime is 581983. The next prime is 582011. The reversal of 581994 is 499185.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3832 + ... + 3980.

It is an arithmetic number, because the mean of its divisors is an integer number (31200).

2⁵⁸¹⁹⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 581994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748800).

581994 is an abundant number, since it is smaller than the sum of its proper divisors (915606).

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

581994 is a wasteful number, since it uses less digits than its factorization.

581994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 192 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 581994 is about 762.8853124815. The cubic root of 581994 is about 83.4909691788.

The spelling of 581994 in words is "five hundred eighty-one thousand, nine hundred ninety-four".