884721 has 8 divisors (see below), whose sum is σ = 1194880. Its totient is φ = 582192.

The previous prime is 884717. The next prime is 884743. The reversal of 884721 is 127488.

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

It is not a de Polignac number, because 884721 - 2² = 884717 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 884721.

It is not an unprimeable number, because it can be changed into a prime (884791) 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, 1630 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (149360).

2⁸⁸⁴⁷²¹ is an apocalyptic number.

It is an amenable number.

884721 is a deficient number, since it is larger than the sum of its proper divisors (310159).

884721 is a wasteful number, since it uses less digits than its factorization.

884721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815.

The product of its digits is 3584, while the sum is 30.

The square root of 884721 is about 940.5960875955. The cubic root of 884721 is about 95.9994574622. Note that the first 3 decimals are identical.

The spelling of 884721 in words is "eight hundred eighty-four thousand, seven hundred twenty-one".