564978 has 32 divisors (see below), whose sum is σ = 1244160. Its totient is φ = 170240.

The previous prime is 564973. The next prime is 564979. The reversal of 564978 is 879465.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (564973) by changing a digit.

564978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2863 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2⁵⁶⁴⁹⁷⁸ is an apocalyptic number.

564978 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

564978 is an abundant number, since it is smaller than the sum of its proper divisors (679182).

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

564978 is a wasteful number, since it uses less digits than its factorization.

564978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its digits is 60480, while the sum is 39.

The square root of 564978 is about 751.6501845939. The cubic root of 564978 is about 82.6692210738.

The spelling of 564978 in words is "five hundred sixty-four thousand, nine hundred seventy-eight".