685227 has 4 divisors (see below), whose sum is σ = 913640. Its totient is φ = 456816.

The previous prime is 685199. The next prime is 685231. The reversal of 685227 is 722586.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 685227 - 2⁷ = 685099 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685194 and 685203.

It is not an unprimeable number, because it can be changed into a prime (685247) 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, 114202 + ... + 114207.

It is an arithmetic number, because the mean of its divisors is an integer number (228410).

2⁶⁸⁵²²⁷ is an apocalyptic number.

685227 is a deficient number, since it is larger than the sum of its proper divisors (228413).

685227 is a wasteful number, since it uses less digits than its factorization.

685227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228412.

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

The square root of 685227 is about 827.7843922182. The cubic root of 685227 is about 88.1613345467.

The spelling of 685227 in words is "six hundred eighty-five thousand, two hundred twenty-seven".