568954912681 has 9 divisors (see below), whose sum is σ = 570384858519. Its totient is φ = 567528548400.

The previous prime is 568954912667. The next prime is 568954912727. The reversal of 568954912681 is 186219459865.

The square root of 568954912681 is 754291.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 526699999081 + 42254913600 = 725741^2 + 205560^2 .

It is a de Polignac number, because none of the positive numbers 2^k-568954912681 is a prime.

It is a super-2 number, since 2×568954912681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (568954912621) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 430699501 + ... + 430700821.

It is an arithmetic number, because the mean of its divisors is an integer number (63376095391).

Almost surely, 2^568954912681 is an apocalyptic number.

568954912681 is the 754291-st square number.

568954912681 is the 377146-th centered octagonal number.

It is an amenable number.

568954912681 is a deficient number, since it is larger than the sum of its proper divisors (1429945838).

568954912681 is an frugal number, since it uses more digits than its factorization.

568954912681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784 (or 1892 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 64.

Multiplying 568954912681 by its sum of digits (64), we get a square (36413114411584 = 6034328²).

The spelling of 568954912681 in words is "five hundred sixty-eight billion, nine hundred fifty-four million, nine hundred twelve thousand, six hundred eighty-one".