568660345981 has 8 divisors (see below), whose sum is σ = 699889656704. Its totient is φ = 449929064880.

The previous prime is 568660345951. The next prime is 568660345993. The reversal of 568660345981 is 189543066865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-568660345981 is a prime.

It is a super-2 number, since 2×568660345981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (568660345931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3124507305 + ... + 3124507486.

It is an arithmetic number, because the mean of its divisors is an integer number (87486207088).

Almost surely, 2^568660345981 is an apocalyptic number.

It is an amenable number.

568660345981 is a deficient number, since it is larger than the sum of its proper divisors (131229310723).

568660345981 is a wasteful number, since it uses less digits than its factorization.

568660345981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249014811.

The product of its (nonzero) digits is 37324800, while the sum is 61.

The spelling of 568660345981 in words is "five hundred sixty-eight billion, six hundred sixty million, three hundred forty-five thousand, nine hundred eighty-one".