874618447661 has 4 divisors (see below), whose sum is σ = 999563940192. Its totient is φ = 749672955132.

The previous prime is 874618447649. The next prime is 874618447687. The reversal of 874618447661 is 166744816478.

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 not a de Polignac number, because 874618447661 - 2²⁶ = 874551338797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 874618447594 and 874618447603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874618447361) 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, 62472746255 + ... + 62472746268.

It is an arithmetic number, because the mean of its divisors is an integer number (249890985048).

Almost surely, 2^874618447661 is an apocalyptic number.

It is an amenable number.

874618447661 is a deficient number, since it is larger than the sum of its proper divisors (124945492531).

874618447661 is a wasteful number, since it uses less digits than its factorization.

874618447661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124945492530.

The product of its digits is 43352064, while the sum is 62.

The spelling of 874618447661 in words is "eight hundred seventy-four billion, six hundred eighteen million, four hundred forty-seven thousand, six hundred sixty-one".