564642 has 48 divisors (see below), whose sum is σ = 1397760. Its totient is φ = 163296.

The previous prime is 564617. The next prime is 564643. The reversal of 564642 is 246465.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (564643) by changing a digit.

564642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4383 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (29120).

2⁵⁶⁴⁶⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 564642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698880).

564642 is an abundant number, since it is smaller than the sum of its proper divisors (833118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

564642 is a wasteful number, since it uses less digits than its factorization.

564642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 164 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 564642 is about 751.4266431263. The cubic root of 564642 is about 82.6528296588.

It can be divided in two parts, 56 and 4642, that multiplied together give a palindrome (259952).

The spelling of 564642 in words is "five hundred sixty-four thousand, six hundred forty-two".