689944223 has 8 divisors (see below), whose sum is σ = 702172800. Its totient is φ = 677809048.

The previous prime is 689944141. The next prime is 689944237. The reversal of 689944223 is 322449986.

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 689944223 - 2²⁴ = 673167007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689944273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8363 + ... + 38076.

It is an arithmetic number, because the mean of its divisors is an integer number (87771600).

Almost surely, 2^689944223 is an apocalyptic number.

689944223 is a deficient number, since it is larger than the sum of its proper divisors (12228577).

689944223 is a wasteful number, since it uses less digits than its factorization.

689944223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46701.

The product of its digits is 746496, while the sum is 47.

The square root of 689944223 is about 26266.7893546204. The cubic root of 689944223 is about 883.6317811360.

The spelling of 689944223 in words is "six hundred eighty-nine million, nine hundred forty-four thousand, two hundred twenty-three".