686275 has 12 divisors (see below), whose sum is σ = 862792. Its totient is φ = 541440.

The previous prime is 686269. The next prime is 686293. The reversal of 686275 is 572686.

686275 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 686275 - 2³ = 686267 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 686275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2284 + ... + 2566.

2⁶⁸⁶²⁷⁵ is an apocalyptic number.

686275 is a deficient number, since it is larger than the sum of its proper divisors (176517).

686275 is a wasteful number, since it uses less digits than its factorization.

686275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 686275 is about 828.4171654426. The cubic root of 686275 is about 88.2062568940.

It can be divided in two parts, 686 and 275, that added together give a square (961 = 31²).

The spelling of 686275 in words is "six hundred eighty-six thousand, two hundred seventy-five".