688703214 has 16 divisors (see below), whose sum is σ = 1437293952. Its totient is φ = 219586488.

The previous prime is 688703159. The next prime is 688703219. The reversal of 688703214 is 412307886.

688703214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688703219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2495164 + ... + 2495439.

It is an arithmetic number, because the mean of its divisors is an integer number (89830872).

Almost surely, 2^688703214 is an apocalyptic number.

688703214 is an abundant number, since it is smaller than the sum of its proper divisors (748590738).

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

688703214 is a wasteful number, since it uses less digits than its factorization.

688703214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990631.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 688703214 is about 26243.1555648325. The cubic root of 688703214 is about 883.1016643046.

The spelling of 688703214 in words is "six hundred eighty-eight million, seven hundred three thousand, two hundred fourteen".