688173134 has 8 divisors (see below), whose sum is σ = 1126101528. Its totient is φ = 312805960.

The previous prime is 688173127. The next prime is 688173137. The reversal of 688173134 is 431371886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 688173091 and 688173100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688173137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15640277 + ... + 15640320.

It is an arithmetic number, because the mean of its divisors is an integer number (140762691).

Almost surely, 2^688173134 is an apocalyptic number.

688173134 is a deficient number, since it is larger than the sum of its proper divisors (437928394).

688173134 is a wasteful number, since it uses less digits than its factorization.

688173134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31280610.

The product of its digits is 96768, while the sum is 41.

The square root of 688173134 is about 26233.0542255377. The cubic root of 688173134 is about 882.8750380543.

The spelling of 688173134 in words is "six hundred eighty-eight million, one hundred seventy-three thousand, one hundred thirty-four".