689453 has 8 divisors (see below), whose sum is σ = 733920. Its totient is φ = 645840.

The previous prime is 689441. The next prime is 689459. The reversal of 689453 is 354986.

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

It is a cyclic number.

It is not a de Polignac number, because 689453 - 2⁶ = 689389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689459) 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, 2351 + ... + 2627.

It is an arithmetic number, because the mean of its divisors is an integer number (91740).

2⁶⁸⁹⁴⁵³ is an apocalyptic number.

It is an amenable number.

689453 is a deficient number, since it is larger than the sum of its proper divisors (44467).

689453 is a wasteful number, since it uses less digits than its factorization.

689453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427.

The product of its digits is 25920, while the sum is 35.

The square root of 689453 is about 830.3330657032. Note that the first 3 decimals coincide. The cubic root of 689453 is about 88.3422023451.

The spelling of 689453 in words is "six hundred eighty-nine thousand, four hundred fifty-three".