871666576 has 75 divisors (see below), whose sum is σ = 1888681665. Its totient is φ = 389716800.

The previous prime is 871666573. The next prime is 871666603. The reversal of 871666576 is 675666178.

The square root of 871666576 is 29524.

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

871666576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 28344976 + 843321600 = 5324^2 + 29040^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871666571) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 14289586 + ... + 14289646.

Almost surely, 2^871666576 is an apocalyptic number.

871666576 is the 29524-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871666576

871666576 is an abundant number, since it is smaller than the sum of its proper divisors (1017015089).

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

871666576 is an frugal number, since it uses more digits than its factorization.

871666576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 74 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The cubic root of 871666576 is about 955.2494532147.

The spelling of 871666576 in words is "eight hundred seventy-one million, six hundred sixty-six thousand, five hundred seventy-six".