568798649 has 4 divisors (see below), whose sum is σ = 598735440. Its totient is φ = 538861860.

The previous prime is 568798639. The next prime is 568798753. The reversal of 568798649 is 946897865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-568798649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 568798591 and 568798600.

It is not an unprimeable number, because it can be changed into a prime (568798619) 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 in 3 ways as a sum of consecutive naturals, for example, 14968367 + ... + 14968404.

It is an arithmetic number, because the mean of its divisors is an integer number (149683860).

Almost surely, 2^568798649 is an apocalyptic number.

It is an amenable number.

568798649 is a deficient number, since it is larger than the sum of its proper divisors (29936791).

568798649 is a wasteful number, since it uses less digits than its factorization.

568798649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29936790.

The product of its digits is 26127360, while the sum is 62.

The square root of 568798649 is about 23849.4999737940. The cubic root of 568798649 is about 828.5515206799.

The spelling of 568798649 in words is "five hundred sixty-eight million, seven hundred ninety-eight thousand, six hundred forty-nine".