688934 has 8 divisors (see below), whose sum is σ = 1050528. Its totient is φ = 338760.

The previous prime is 688907. The next prime is 688939. The reversal of 688934 is 439886.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688939) 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, 2702 + ... + 2945.

It is an arithmetic number, because the mean of its divisors is an integer number (131316).

2⁶⁸⁸⁹³⁴ is an apocalyptic number.

688934 is a deficient number, since it is larger than the sum of its proper divisors (361594).

688934 is a wasteful number, since it uses less digits than its factorization.

688934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710.

The product of its digits is 41472, while the sum is 38.

The square root of 688934 is about 830.0204816750. The cubic root of 688934 is about 88.3200296408.

It can be divided in two parts, 68893 and 4, that multiplied together give a palindrome (275572).

The spelling of 688934 in words is "six hundred eighty-eight thousand, nine hundred thirty-four".