568987 has 2 divisors, whose sum is σ = 568988. Its totient is φ = 568986.

The previous prime is 568979. The next prime is 568991. The reversal of 568987 is 789865.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 568987 - 2³ = 568979 is a prime.

It is not a weakly prime, because it can be changed into another prime (568907) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284493 + 284494.

It is an arithmetic number, because the mean of its divisors is an integer number (284494).

2⁵⁶⁸⁹⁸⁷ is an apocalyptic number.

568987 is a deficient number, since it is larger than the sum of its proper divisors (1).

568987 is an equidigital number, since it uses as much as digits as its factorization.

568987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 568987 is about 754.3122695542. The cubic root of 568987 is about 82.8642965626.

It can be divided in two parts, 5689 and 87, that added together give a square (5776 = 76²).

The spelling of 568987 in words is "five hundred sixty-eight thousand, nine hundred eighty-seven".