564621 has 8 divisors (see below), whose sum is σ = 797184. Its totient is φ = 354240.

The previous prime is 564617. The next prime is 564643. The reversal of 564621 is 126465.

564621 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 not a de Polignac number, because 564621 - 2² = 564617 is a prime.

564621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 564591 and 564600.

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 564621.

It is not an unprimeable number, because it can be changed into a prime (564671) 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, 5485 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (99648).

2⁵⁶⁴⁶²¹ is an apocalyptic number.

564621 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

564621 is a deficient number, since it is larger than the sum of its proper divisors (232563).

564621 is a wasteful number, since it uses less digits than its factorization.

564621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11091.

The product of its digits is 1440, while the sum is 24.

The square root of 564621 is about 751.4126695764. The cubic root of 564621 is about 82.6518049795.

The spelling of 564621 in words is "five hundred sixty-four thousand, six hundred twenty-one".