687159 has 18 divisors (see below), whose sum is σ = 1092728. Its totient is φ = 415800.

The previous prime is 687151. The next prime is 687161. The reversal of 687159 is 951786.

It is not a de Polignac number, because 687159 - 2³ = 687151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687151) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 774 + ... + 1404.

2⁶⁸⁷¹⁵⁹ is an apocalyptic number.

687159 is a deficient number, since it is larger than the sum of its proper divisors (405569).

687159 is a wasteful number, since it uses less digits than its factorization.

687159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 645 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 687159 is about 828.9505413473. The cubic root of 687159 is about 88.2441138635.

It can be divided in two parts, 68 and 7159, that added together give a palindrome (7227).

The spelling of 687159 in words is "six hundred eighty-seven thousand, one hundred fifty-nine".