573631 has 8 divisors (see below), whose sum is σ = 622944. Its totient is φ = 526080.

The previous prime is 573571. The next prime is 573637. The reversal of 573631 is 136375.

It is a happy number.

573631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 573631 - 2⁹ = 573119 is a prime.

It is a super-2 number, since 2×573631² = 658105048322, which contains 22 as substring.

It is a Duffinian number.

573631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 573596 and 573605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (573637) 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, 286 + ... + 1108.

It is an arithmetic number, because the mean of its divisors is an integer number (77868).

2⁵⁷³⁶³¹ is an apocalyptic number.

573631 is a deficient number, since it is larger than the sum of its proper divisors (49313).

573631 is a wasteful number, since it uses less digits than its factorization.

573631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881.

The product of its digits is 1890, while the sum is 25.

The square root of 573631 is about 757.3843145986. The cubic root of 573631 is about 83.0891286233.

The spelling of 573631 in words is "five hundred seventy-three thousand, six hundred thirty-one".