564278 has 16 divisors (see below), whose sum is σ = 994896. Its totient is φ = 236640.

The previous prime is 564271. The next prime is 564299. The reversal of 564278 is 872465.

It is a super-2 number, since 2×564278² = 636819322568, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564271) by changing a digit.

564278 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 7 ways as a sum of consecutive naturals, for example, 701 + ... + 1272.

It is an arithmetic number, because the mean of its divisors is an integer number (62181).

2⁵⁶⁴²⁷⁸ is an apocalyptic number.

564278 is a deficient number, since it is larger than the sum of its proper divisors (430618).

564278 is a wasteful number, since it uses less digits than its factorization.

564278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its digits is 13440, while the sum is 32.

The square root of 564278 is about 751.1843981340. The cubic root of 564278 is about 82.6350649529.

It can be divided in two parts, 56 and 4278, that added together give a palindrome (4334).

The spelling of 564278 in words is "five hundred sixty-four thousand, two hundred seventy-eight".