581673 has 4 divisors (see below), whose sum is σ = 775568. Its totient is φ = 387780.

The previous prime is 581663. The next prime is 581683. The reversal of 581673 is 376185.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (581663) and next prime (581683).

It is not a de Polignac number, because 581673 - 2⁴ = 581657 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 581673.

It is not an unprimeable number, because it can be changed into a prime (581663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96943 + ... + 96948.

It is an arithmetic number, because the mean of its divisors is an integer number (193892).

2⁵⁸¹⁶⁷³ is an apocalyptic number.

It is an amenable number.

581673 is a deficient number, since it is larger than the sum of its proper divisors (193895).

581673 is a wasteful number, since it uses less digits than its factorization.

581673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193894.

The product of its digits is 5040, while the sum is 30.

The square root of 581673 is about 762.6748979742. The cubic root of 581673 is about 83.4756164834.

The spelling of 581673 in words is "five hundred eighty-one thousand, six hundred seventy-three".