871620797717 has 8 divisors (see below), whose sum is σ = 874020051840. Its totient is φ = 869222067840.

The previous prime is 871620797699. The next prime is 871620797741. The reversal of 871620797717 is 717797026178.

871620797717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 871620797717 - 2¹⁰ = 871620796693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 871620797717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871620797767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323717 + ... + 3576357.

It is an arithmetic number, because the mean of its divisors is an integer number (109252506480).

Almost surely, 2^871620797717 is an apocalyptic number.

It is an amenable number.

871620797717 is a deficient number, since it is larger than the sum of its proper divisors (2399254123).

871620797717 is a wasteful number, since it uses less digits than its factorization.

871620797717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262123.

The product of its (nonzero) digits is 14521248, while the sum is 62.

The spelling of 871620797717 in words is "eight hundred seventy-one billion, six hundred twenty million, seven hundred ninety-seven thousand, seven hundred seventeen".