568908921 has 32 divisors (see below), whose sum is σ = 898698240. Its totient is φ = 313217856.

The previous prime is 568908917. The next prime is 568908973. The reversal of 568908921 is 129809865.

It is a happy number.

It is not a de Polignac number, because 568908921 - 2² = 568908917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (568908911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478690 + ... + 479876.

It is an arithmetic number, because the mean of its divisors is an integer number (28084320).

Almost surely, 2^568908921 is an apocalyptic number.

It is an amenable number.

568908921 is a deficient number, since it is larger than the sum of its proper divisors (329789319).

568908921 is a wasteful number, since it uses less digits than its factorization.

568908921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 568908921 is about 23851.8116921965. The cubic root of 568908921 is about 828.6050604986.

The spelling of 568908921 in words is "five hundred sixty-eight million, nine hundred eight thousand, nine hundred twenty-one".