687896 has 16 divisors (see below), whose sum is σ = 1407240. Its totient is φ = 312640.

The previous prime is 687893. The next prime is 687901. The reversal of 687896 is 698786.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687893) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3821 + ... + 3996.

2⁶⁸⁷⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

687896 is an abundant number, since it is smaller than the sum of its proper divisors (719344).

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

687896 is a wasteful number, since it uses less digits than its factorization.

687896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834 (or 7830 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 687896 is about 829.3949601969. The cubic root of 687896 is about 88.2756508026.

The spelling of 687896 in words is "six hundred eighty-seven thousand, eight hundred ninety-six".