689622 has 16 divisors (see below), whose sum is σ = 1460592. Its totient is φ = 216320.

The previous prime is 689621. The next prime is 689629. The reversal of 689622 is 226986.

689622 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 (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689621) 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, 3279 + ... + 3482.

It is an arithmetic number, because the mean of its divisors is an integer number (91287).

2⁶⁸⁹⁶²² is an apocalyptic number.

689622 is an abundant number, since it is smaller than the sum of its proper divisors (770970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689622 is a wasteful number, since it uses less digits than its factorization.

689622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783.

The product of its digits is 10368, while the sum is 33.

The square root of 689622 is about 830.4348258593. The cubic root of 689622 is about 88.3494199570.

The spelling of 689622 in words is "six hundred eighty-nine thousand, six hundred twenty-two".