822641 has 8 divisors (see below), whose sum is σ = 877824. Its totient is φ = 769120.

The previous prime is 822631. The next prime is 822667. The reversal of 822641 is 146228.

822641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 822641 - 2¹⁴ = 806257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822611) 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, 701 + ... + 1461.

It is an arithmetic number, because the mean of its divisors is an integer number (109728).

2⁸²²⁶⁴¹ is an apocalyptic number.

It is an amenable number.

822641 is a deficient number, since it is larger than the sum of its proper divisors (55183).

822641 is a wasteful number, since it uses less digits than its factorization.

822641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831.

The product of its digits is 768, while the sum is 23.

The square root of 822641 is about 906.9955898459. The cubic root of 822641 is about 93.6993943179.

Adding to 822641 its reverse (146228), we get a palindrome (968869).

The spelling of 822641 in words is "eight hundred twenty-two thousand, six hundred forty-one".