882821 has 4 divisors (see below), whose sum is σ = 899532. Its totient is φ = 866112.

The previous prime is 882779. The next prime is 882823. The reversal of 882821 is 128288.

882821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 801025 + 81796 = 895^2 + 286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-882821 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (882823) 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, 8276 + ... + 8381.

It is an arithmetic number, because the mean of its divisors is an integer number (224883).

2⁸⁸²⁸²¹ is an apocalyptic number.

It is an amenable number.

882821 is a deficient number, since it is larger than the sum of its proper divisors (16711).

882821 is a wasteful number, since it uses less digits than its factorization.

882821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16710.

The product of its digits is 2048, while the sum is 29.

The square root of 882821 is about 939.5855469301. The cubic root of 882821 is about 95.9306863669.

The spelling of 882821 in words is "eight hundred eighty-two thousand, eight hundred twenty-one".