8557730064 has 135 divisors (see below), whose sum is σ = 25977569007. Its totient is φ = 2628707328.

The previous prime is 8557730057. The next prime is 8557730143. The reversal of 8557730064 is 4600377558.

The square root of 8557730064 is 92508.

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

8557730064 is a `hidden beast` number, since 8 + 557 + 7 + 30 + 0 + 64 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 629608464 + 7928121600 = 25092^2 + 89040^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14430952 + ... + 14431544.

Almost surely, 2^8557730064 is an apocalyptic number.

8557730064 is the 92508-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8557730064

8557730064 is an abundant number, since it is smaller than the sum of its proper divisors (17419838943).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8557730064 is a wasteful number, since it uses less digits than its factorization.

8557730064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The cubic root of 8557730064 is about 2045.4374089209.

The spelling of 8557730064 in words is "eight billion, five hundred fifty-seven million, seven hundred thirty thousand, sixty-four".