688875706423 has 4 divisors (see below), whose sum is σ = 689847323080. Its totient is φ = 687904089768.

The previous prime is 688875706417. The next prime is 688875706439. The reversal of 688875706423 is 324607578886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324607578886 = 2 ⋅162303789443.

It is a cyclic number.

It is not a de Polignac number, because 688875706423 - 2⁵ = 688875706391 is a prime.

It is a super-3 number, since 3×688875706423³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688875706523) 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, 485807265 + ... + 485808682.

It is an arithmetic number, because the mean of its divisors is an integer number (172461830770).

Almost surely, 2^688875706423 is an apocalyptic number.

688875706423 is a deficient number, since it is larger than the sum of its proper divisors (971616657).

688875706423 is an equidigital number, since it uses as much as digits as its factorization.

688875706423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971616656.

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 688875706423 in words is "six hundred eighty-eight billion, eight hundred seventy-five million, seven hundred six thousand, four hundred twenty-three".