871615564 has 24 divisors (see below), whose sum is σ = 1559597760. Its totient is φ = 426038016.

The previous prime is 871615559. The next prime is 871615571. The reversal of 871615564 is 465516178.

It is a self number, because there is not a number n which added to its sum of digits gives 871615564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198804 + ... + 203140.

It is an arithmetic number, because the mean of its divisors is an integer number (64983240).

Almost surely, 2^871615564 is an apocalyptic number.

It is an amenable number.

871615564 is a deficient number, since it is larger than the sum of its proper divisors (687982196).

871615564 is a wasteful number, since it uses less digits than its factorization.

871615564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457 (or 5455 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 871615564 is about 29523.1360800305. The cubic root of 871615564 is about 955.2308183616.

The spelling of 871615564 in words is "eight hundred seventy-one million, six hundred fifteen thousand, five hundred sixty-four".