822681 has 24 divisors (see below), whose sum is σ = 1329120. Its totient is φ = 487296.

The previous prime is 822673. The next prime is 822683. The reversal of 822681 is 186228.

822681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 822681 - 2³ = 822673 is a prime.

It is a super-2 number, since 2×822681² = 1353608055522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (822683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2766 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (55380).

2⁸²²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

822681 is a deficient number, since it is larger than the sum of its proper divisors (506439).

822681 is a wasteful number, since it uses less digits than its factorization.

822681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 322 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 822681 is about 907.0176404018. The cubic root of 822681 is about 93.7009129694.

The spelling of 822681 in words is "eight hundred twenty-two thousand, six hundred eighty-one".