885641 has 4 divisors (see below), whose sum is σ = 907284. Its totient is φ = 864000.

The previous prime is 885623. The next prime is 885679. The reversal of 885641 is 146588.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 490000 = 629^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 885641 - 2¹⁰ = 884617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 885598 and 885607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885611) 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, 10760 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (226821).

2⁸⁸⁵⁶⁴¹ is an apocalyptic number.

It is an amenable number.

885641 is a deficient number, since it is larger than the sum of its proper divisors (21643).

885641 is a wasteful number, since it uses less digits than its factorization.

885641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21642.

The product of its digits is 7680, while the sum is 32.

The square root of 885641 is about 941.0850121004. The cubic root of 885641 is about 96.0327217737.

The spelling of 885641 in words is "eight hundred eighty-five thousand, six hundred forty-one".