688614 has 8 divisors (see below), whose sum is σ = 1377240. Its totient is φ = 229536.

The previous prime is 688591. The next prime is 688621. The reversal of 688614 is 416886.

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

688614 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 688614.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57379 + ... + 57390.

It is an arithmetic number, because the mean of its divisors is an integer number (172155).

2⁶⁸⁸⁶¹⁴ is an apocalyptic number.

688614 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688614 is a wasteful number, since it uses less digits than its factorization.

688614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114774.

The product of its digits is 9216, while the sum is 33.

The square root of 688614 is about 829.8276929580. The cubic root of 688614 is about 88.3063530591.

The spelling of 688614 in words is "six hundred eighty-eight thousand, six hundred fourteen".