566978 has 4 divisors (see below), whose sum is σ = 850470. Its totient is φ = 283488.

The previous prime is 566977. The next prime is 566987. The reversal of 566978 is 879665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 466489 + 100489 = 683^2 + 317^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (566971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141743 + ... + 141746.

2⁵⁶⁶⁹⁷⁸ is an apocalyptic number.

566978 is a deficient number, since it is larger than the sum of its proper divisors (283492).

566978 is a wasteful number, since it uses less digits than its factorization.

566978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283491.

The product of its digits is 90720, while the sum is 41.

The square root of 566978 is about 752.9794153893. The cubic root of 566978 is about 82.7666547955.

The spelling of 566978 in words is "five hundred sixty-six thousand, nine hundred seventy-eight".