665227 has 8 divisors (see below), whose sum is σ = 712800. Its totient is φ = 618624.

The previous prime is 665221. The next prime is 665233. The reversal of 665227 is 722566.

It is an interprime number because it is at equal distance from previous prime (665221) and next prime (665233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 665227 - 2¹⁵ = 632459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665195 and 665204.

It is not an unprimeable number, because it can be changed into a prime (665221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674 + ... + 2032.

It is an arithmetic number, because the mean of its divisors is an integer number (89100).

2⁶⁶⁵²²⁷ is an apocalyptic number.

665227 is a deficient number, since it is larger than the sum of its proper divisors (47573).

665227 is a wasteful number, since it uses less digits than its factorization.

665227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its digits is 5040, while the sum is 28.

The square root of 665227 is about 815.6144922695. The cubic root of 665227 is about 87.2951179200.

Multiplying 665227 by its sum of digits (28), we get a triangular number (18626356 = T₆₁₀₃).

The spelling of 665227 in words is "six hundred sixty-five thousand, two hundred twenty-seven".