688578323 has 4 divisors (see below), whose sum is σ = 688805040. Its totient is φ = 688351608.

The previous prime is 688578311. The next prime is 688578343. The reversal of 688578323 is 323875886.

688578323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 688578323 - 2¹⁶ = 688512787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688578343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108740 + ... + 114897.

It is an arithmetic number, because the mean of its divisors is an integer number (172201260).

Almost surely, 2^688578323 is an apocalyptic number.

688578323 is a deficient number, since it is larger than the sum of its proper divisors (226717).

688578323 is a wasteful number, since it uses less digits than its factorization.

688578323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226716.

The product of its digits is 1935360, while the sum is 50.

The square root of 688578323 is about 26240.7759603256. The cubic root of 688578323 is about 883.0482798591.

The spelling of 688578323 in words is "six hundred eighty-eight million, five hundred seventy-eight thousand, three hundred twenty-three".