687227 has 4 divisors (see below), whose sum is σ = 690696. Its totient is φ = 683760.

The previous prime is 687223. The next prime is 687233. The reversal of 687227 is 722786.

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

It is a cyclic number.

It is not a de Polignac number, because 687227 - 2² = 687223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 687193 and 687202.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 687227.

It is not an unprimeable number, because it can be changed into a prime (687223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (172674).

2⁶⁸⁷²²⁷ is an apocalyptic number.

687227 is a deficient number, since it is larger than the sum of its proper divisors (3469).

687227 is a wasteful number, since it uses less digits than its factorization.

687227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468.

The product of its digits is 9408, while the sum is 32.

The square root of 687227 is about 828.9915560487. The cubic root of 687227 is about 88.2470245929.

The spelling of 687227 in words is "six hundred eighty-seven thousand, two hundred twenty-seven".