871566964 has 12 divisors (see below), whose sum is σ = 1537252864. Its totient is φ = 432351864.

The previous prime is 871566959. The next prime is 871566979. The reversal of 871566964 is 469665178.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 857334 + ... + 858349.

Almost surely, 2^871566964 is an apocalyptic number.

It is an amenable number.

871566964 is a deficient number, since it is larger than the sum of its proper divisors (665685900).

871566964 is a wasteful number, since it uses less digits than its factorization.

871566964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715814 (or 1715812 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 871566964 is about 29522.3129852659. The cubic root of 871566964 is about 955.2130639438.

The spelling of 871566964 in words is "eight hundred seventy-one million, five hundred sixty-six thousand, nine hundred sixty-four".