688334 has 4 divisors (see below), whose sum is σ = 1032504. Its totient is φ = 344166.

The previous prime is 688333. The next prime is 688339. The reversal of 688334 is 433886.

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

It is a self number, because there is not a number n which added to its sum of digits gives 688334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172082 + ... + 172085.

It is an arithmetic number, because the mean of its divisors is an integer number (258126).

2⁶⁸⁸³³⁴ is an apocalyptic number.

688334 is a deficient number, since it is larger than the sum of its proper divisors (344170).

688334 is a wasteful number, since it uses less digits than its factorization.

688334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344169.

The product of its digits is 13824, while the sum is 32.

The square root of 688334 is about 829.6589660818. The cubic root of 688334 is about 88.2943825740.

The spelling of 688334 in words is "six hundred eighty-eight thousand, three hundred thirty-four".