568319137 has 2 divisors, whose sum is σ = 568319138. Its totient is φ = 568319136.

The previous prime is 568319123. The next prime is 568319183. The reversal of 568319137 is 731913865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 452455441 + 115863696 = 21271^2 + 10764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-568319137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 568319093 and 568319102.

It is not a weakly prime, because it can be changed into another prime (568319107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284159568 + 284159569.

It is an arithmetic number, because the mean of its divisors is an integer number (284159569).

Almost surely, 2^568319137 is an apocalyptic number.

It is an amenable number.

568319137 is a deficient number, since it is larger than the sum of its proper divisors (1).

568319137 is an equidigital number, since it uses as much as digits as its factorization.

568319137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 568319137 is about 23839.4449809554. Note that the first 3 decimals coincide. The cubic root of 568319137 is about 828.3186250881.

The spelling of 568319137 in words is "five hundred sixty-eight million, three hundred nineteen thousand, one hundred thirty-seven".