687252 has 12 divisors (see below), whose sum is σ = 1603616. Its totient is φ = 229080.

The previous prime is 687233. The next prime is 687277. The reversal of 687252 is 252786.

687252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 687252.

It is an unprimeable number.

687252 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28624 + ... + 28647.

2⁶⁸⁷²⁵² is an apocalyptic number.

It is an amenable number.

687252 is an abundant number, since it is smaller than the sum of its proper divisors (916364).

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

687252 is a wasteful number, since it uses less digits than its factorization.

687252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57278 (or 57276 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 687252 is about 829.0066344728. The cubic root of 687252 is about 88.2480946658.

It can be divided in two parts, 687 and 252, that added together give a palindrome (939).

The spelling of 687252 in words is "six hundred eighty-seven thousand, two hundred fifty-two".