885643121 has 8 divisors (see below), whose sum is σ = 966821184. Its totient is φ = 804575920.

The previous prime is 885643111. The next prime is 885643127. The reversal of 885643121 is 121346588.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-885643121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (885643127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10541 + ... + 43386.

It is an arithmetic number, because the mean of its divisors is an integer number (120852648).

Almost surely, 2^885643121 is an apocalyptic number.

It is an amenable number.

885643121 is a deficient number, since it is larger than the sum of its proper divisors (81178063).

885643121 is a wasteful number, since it uses less digits than its factorization.

885643121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55431.

The product of its digits is 46080, while the sum is 38.

The square root of 885643121 is about 29759.7567362369. The cubic root of 885643121 is about 960.3279843578.

The spelling of 885643121 in words is "eight hundred eighty-five million, six hundred forty-three thousand, one hundred twenty-one".