860705218564 has 27 divisors (see below), whose sum is σ = 1518248636373. Its totient is φ = 426946868400.

The previous prime is 860705218561. The next prime is 860705218627. The reversal of 860705218564 is 465812507068.

It is a happy number.

The square root of 860705218564 is 927742.

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., 360290458564 + 500414760000 = 600242^2 + 707400^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860705218561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 243066634 + ... + 243070174.

Almost surely, 2^860705218564 is an apocalyptic number.

860705218564 is the 927742-nd square number.

It is an amenable number.

860705218564 is a deficient number, since it is larger than the sum of its proper divisors (657543417809).

860705218564 is an frugal number, since it uses more digits than its factorization.

860705218564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348 (or 3674 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 860705218564 in words is "eight hundred sixty billion, seven hundred five million, two hundred eighteen thousand, five hundred sixty-four".