871361615 has 4 divisors (see below), whose sum is σ = 1045633944. Its totient is φ = 697089288.

The previous prime is 871361597. The next prime is 871361627. The reversal of 871361615 is 516163178.

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 871361615 - 2¹⁴ = 871345231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87136157 + ... + 87136166.

It is an arithmetic number, because the mean of its divisors is an integer number (261408486).

Almost surely, 2^871361615 is an apocalyptic number.

871361615 is a deficient number, since it is larger than the sum of its proper divisors (174272329).

871361615 is a wasteful number, since it uses less digits than its factorization.

871361615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174272328.

The product of its digits is 30240, while the sum is 38.

The square root of 871361615 is about 29518.8349194205. The cubic root of 871361615 is about 955.1380391274.

The spelling of 871361615 in words is "eight hundred seventy-one million, three hundred sixty-one thousand, six hundred fifteen".