689822 has 12 divisors (see below), whose sum is σ = 1203840. Its totient is φ = 295596.

The previous prime is 689807. The next prime is 689827. The reversal of 689822 is 228986.

689822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3422 + ... + 3617.

It is an arithmetic number, because the mean of its divisors is an integer number (100320).

2⁶⁸⁹⁸²² is an apocalyptic number.

689822 is a deficient number, since it is larger than the sum of its proper divisors (514018).

689822 is a wasteful number, since it uses less digits than its factorization.

689822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055 (or 7048 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 689822 is about 830.5552359717. Note that the first 3 decimals coincide. The cubic root of 689822 is about 88.3579599862.

The spelling of 689822 in words is "six hundred eighty-nine thousand, eight hundred twenty-two".