687930714 has 36 divisors (see below), whose sum is σ = 1531944414. Its totient is φ = 223104672.

The previous prime is 687930689. The next prime is 687930743. The reversal of 687930714 is 417039786.

It can be written as a sum of positive squares in 3 ways, for example, as 610930089 + 77000625 = 24717^2 + 8775^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 687930714.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10684 + ... + 38600.

Almost surely, 2^687930714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687930714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765972207).

687930714 is an abundant number, since it is smaller than the sum of its proper divisors (844013700).

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

687930714 is a wasteful number, since it uses less digits than its factorization.

687930714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27999 (or 27959 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 687930714 is about 26228.4333119613. The cubic root of 687930714 is about 882.7713569250.

The spelling of 687930714 in words is "six hundred eighty-seven million, nine hundred thirty thousand, seven hundred fourteen".