871630087 has 4 divisors (see below), whose sum is σ = 890175456. Its totient is φ = 853084720.

The previous prime is 871630049. The next prime is 871630093. The reversal of 871630087 is 780036178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 871630087 - 2¹¹ = 871628039 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871630027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9272614 + ... + 9272707.

It is an arithmetic number, because the mean of its divisors is an integer number (222543864).

Almost surely, 2^871630087 is an apocalyptic number.

871630087 is a deficient number, since it is larger than the sum of its proper divisors (18545369).

871630087 is a wasteful number, since it uses less digits than its factorization.

871630087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545368.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 871630087 is about 29523.3820386486. The cubic root of 871630087 is about 955.2361237358.

The spelling of 871630087 in words is "eight hundred seventy-one million, six hundred thirty thousand, eighty-seven".