688734775677 has 16 divisors (see below), whose sum is σ = 989341532928. Its totient is φ = 423670056000.

The previous prime is 688734775633. The next prime is 688734775691. The reversal of 688734775677 is 776577437886.

It is not a de Polignac number, because 688734775677 - 2⁶ = 688734775613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 688734775599 and 688734775608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688734775697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3373074 + ... + 3571427.

It is an arithmetic number, because the mean of its divisors is an integer number (61833845808).

Almost surely, 2^688734775677 is an apocalyptic number.

It is an amenable number.

688734775677 is a deficient number, since it is larger than the sum of its proper divisors (300606757251).

688734775677 is a wasteful number, since it uses less digits than its factorization.

688734775677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6947060.

The product of its digits is 2323399680, while the sum is 75.

The spelling of 688734775677 in words is "six hundred eighty-eight billion, seven hundred thirty-four million, seven hundred seventy-five thousand, six hundred seventy-seven".