689509323 has 12 divisors (see below), whose sum is σ = 998115040. Its totient is φ = 458677296.

The previous prime is 689509267. The next prime is 689509339. The reversal of 689509323 is 323905986.

It is not a de Polignac number, because 689509323 - 2⁹ = 689508811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689409323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78568 + ... + 86901.

Almost surely, 2^689509323 is an apocalyptic number.

689509323 is a deficient number, since it is larger than the sum of its proper divisors (308605717).

689509323 is a wasteful number, since it uses less digits than its factorization.

689509323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165938 (or 165935 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 689509323 is about 26258.5095350060. The cubic root of 689509323 is about 883.4460790546.

The spelling of 689509323 in words is "six hundred eighty-nine million, five hundred nine thousand, three hundred twenty-three".