687714 has 16 divisors (see below), whose sum is σ = 1398720. Its totient is φ = 225360.

The previous prime is 687707. The next prime is 687721. The reversal of 687714 is 417786.

It is an interprime number because it is at equal distance from previous prime (687707) and next prime (687721).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (87420).

2⁶⁸⁷⁷¹⁴ is an apocalyptic number.

687714 is an abundant number, since it is smaller than the sum of its proper divisors (711006).

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

687714 is a wasteful number, since it uses less digits than its factorization.

687714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945.

The product of its digits is 9408, while the sum is 33.

The square root of 687714 is about 829.2852344037. The cubic root of 687714 is about 88.2678649428.

The spelling of 687714 in words is "six hundred eighty-seven thousand, seven hundred fourteen".