687141 has 24 divisors (see below), whose sum is σ = 1223040. Its totient is φ = 362016.

The previous prime is 687139. The next prime is 687151. The reversal of 687141 is 141786.

It is a happy number.

687141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 687141 - 2¹ = 687139 is a prime.

687141 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 400 + ... + 1238.

It is an arithmetic number, because the mean of its divisors is an integer number (50960).

2⁶⁸⁷¹⁴¹ is an apocalyptic number.

It is an amenable number.

687141 is a deficient number, since it is larger than the sum of its proper divisors (535899).

687141 is a wasteful number, since it uses less digits than its factorization.

687141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 862 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 687141 is about 828.9396841749. The cubic root of 687141 is about 88.2433433441.

It can be divided in two parts, 687 and 141, that added together give a palindrome (828).

The spelling of 687141 in words is "six hundred eighty-seven thousand, one hundred forty-one".