565978 has 8 divisors (see below), whose sum is σ = 970272. Its totient is φ = 242556.

The previous prime is 565973. The next prime is 565979. The reversal of 565978 is 879565.

It is a happy number.

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 5 + 6⁴ + 9⁶ + 5³ + 7³ + 8⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 565978.

It is not an unprimeable number, because it can be changed into a prime (565973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20200 + ... + 20227.

It is an arithmetic number, because the mean of its divisors is an integer number (121284).

2⁵⁶⁵⁹⁷⁸ is an apocalyptic number.

565978 is a deficient number, since it is larger than the sum of its proper divisors (404294).

565978 is a wasteful number, since it uses less digits than its factorization.

565978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40436.

The product of its digits is 75600, while the sum is 40.

The square root of 565978 is about 752.3150935612. The cubic root of 565978 is about 82.7179666265.

The spelling of 565978 in words is "five hundred sixty-five thousand, nine hundred seventy-eight".