870636713617 has 4 divisors (see below), whose sum is σ = 949785505776. Its totient is φ = 791487921460.

The previous prime is 870636713561. The next prime is 870636713623. The reversal of 870636713617 is 716317636078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870636713617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870636743617) 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, 39574396063 + ... + 39574396084.

It is an arithmetic number, because the mean of its divisors is an integer number (237446376444).

Almost surely, 2^870636713617 is an apocalyptic number.

It is an amenable number.

870636713617 is a deficient number, since it is larger than the sum of its proper divisors (79148792159).

870636713617 is a wasteful number, since it uses less digits than its factorization.

870636713617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79148792158.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 870636713617 in words is "eight hundred seventy billion, six hundred thirty-six million, seven hundred thirteen thousand, six hundred seventeen".