687874 has 8 divisors (see below), whose sum is σ = 1125648. Its totient is φ = 312660.

The previous prime is 687847. The next prime is 687893. The reversal of 687874 is 478786.

687874 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15612 + ... + 15655.

It is an arithmetic number, because the mean of its divisors is an integer number (140706).

2⁶⁸⁷⁸⁷⁴ is an apocalyptic number.

687874 is a deficient number, since it is larger than the sum of its proper divisors (437774).

687874 is a wasteful number, since it uses less digits than its factorization.

687874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31280.

The product of its digits is 75264, while the sum is 40.

The square root of 687874 is about 829.3816974108. The cubic root of 687874 is about 88.2747097277.

The spelling of 687874 in words is "six hundred eighty-seven thousand, eight hundred seventy-four".