688714 has 8 divisors (see below), whose sum is σ = 1112580. Its totient is φ = 317856.

The previous prime is 688697. The next prime is 688717. The reversal of 688714 is 417886.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 75625 = 783^2 + 275^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 688714.

It is not an unprimeable number, because it can be changed into a prime (688717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13219 + ... + 13270.

2⁶⁸⁸⁷¹⁴ is an apocalyptic number.

688714 is a deficient number, since it is larger than the sum of its proper divisors (423866).

688714 is a wasteful number, since it uses less digits than its factorization.

688714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26504.

The product of its digits is 10752, while the sum is 34.

The square root of 688714 is about 829.8879442431. The cubic root of 688714 is about 88.3106274459.

The spelling of 688714 in words is "six hundred eighty-eight thousand, seven hundred fourteen".