573681 has 4 divisors (see below), whose sum is σ = 764912. Its totient is φ = 382452.

The previous prime is 573679. The next prime is 573691. The reversal of 573681 is 186375.

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 not a de Polignac number, because 573681 - 2¹ = 573679 is a prime.

It is a super-2 number, since 2×573681² = 658219779522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 573681.

It is not an unprimeable number, because it can be changed into a prime (573691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95611 + ... + 95616.

It is an arithmetic number, because the mean of its divisors is an integer number (191228).

2⁵⁷³⁶⁸¹ is an apocalyptic number.

It is an amenable number.

573681 is a deficient number, since it is larger than the sum of its proper divisors (191231).

573681 is a wasteful number, since it uses less digits than its factorization.

573681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191230.

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

The square root of 573681 is about 757.4173222207. The cubic root of 573681 is about 83.0915426814.

The spelling of 573681 in words is "five hundred seventy-three thousand, six hundred eighty-one".