688708214 has 8 divisors (see below), whose sum is σ = 1066387008. Its totient is φ = 333245880.

The previous prime is 688708213. The next prime is 688708217. The reversal of 688708214 is 412807886.

688708214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (688708213) 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, 5554037 + ... + 5554160.

It is an arithmetic number, because the mean of its divisors is an integer number (133298376).

Almost surely, 2^688708214 is an apocalyptic number.

688708214 is a deficient number, since it is larger than the sum of its proper divisors (377678794).

688708214 is a wasteful number, since it uses less digits than its factorization.

688708214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11108230.

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 688708214 is about 26243.2508275937. The cubic root of 688708214 is about 883.1038014117.

The spelling of 688708214 in words is "six hundred eighty-eight million, seven hundred eight thousand, two hundred fourteen".