688124 has 6 divisors (see below), whose sum is σ = 1204224. Its totient is φ = 344060.

The previous prime is 688111. The next prime is 688133. The reversal of 688124 is 421886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86012 + ... + 86019.

It is an arithmetic number, because the mean of its divisors is an integer number (200704).

688124 is a Friedman number, since it can be written as (21*8^6)/8-4, using all its digits and the basic arithmetic operations.

2⁶⁸⁸¹²⁴ is an apocalyptic number.

It is an amenable number.

688124 is a deficient number, since it is larger than the sum of its proper divisors (516100).

688124 is a wasteful number, since it uses less digits than its factorization.

688124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172035 (or 172033 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 688124 is about 829.5323984029. The cubic root of 688124 is about 88.2854025796.

Adding to 688124 its product of digits (3072), we get a palindrome (691196).

It can be divided in two parts, 68 and 8124, that added together give a 13-th power (8192 = 2¹³).

The spelling of 688124 in words is "six hundred eighty-eight thousand, one hundred twenty-four".