573621 has 8 divisors (see below), whose sum is σ = 768384. Its totient is φ = 380640.

The previous prime is 573571. The next prime is 573637. The reversal of 573621 is 126375.

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

It is not a de Polignac number, because 573621 - 2⁶ = 573557 is a prime.

It is a Curzon number.

573621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 573591 and 573600.

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 573621.

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 7 ways as a sum of consecutive naturals, for example, 841 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (96048).

2⁵⁷³⁶²¹ is an apocalyptic number.

It is an amenable number.

573621 is a deficient number, since it is larger than the sum of its proper divisors (194763).

573621 is a wasteful number, since it uses less digits than its factorization.

573621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891.

The product of its digits is 1260, while the sum is 24.

The square root of 573621 is about 757.3777129016. The cubic root of 573621 is about 83.0886457949.

Adding to 573621 its reverse (126375), we get a palindrome (699996).

The spelling of 573621 in words is "five hundred seventy-three thousand, six hundred twenty-one".