665078227 has 8 divisors (see below), whose sum is σ = 725765040. Its totient is φ = 604428960.

The previous prime is 665078207. The next prime is 665078231. The reversal of 665078227 is 722870566.

665078227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665078227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665078207) 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, 38149 + ... + 52777.

It is an arithmetic number, because the mean of its divisors is an integer number (90720630).

Almost surely, 2^665078227 is an apocalyptic number.

665078227 is a deficient number, since it is larger than the sum of its proper divisors (60686813).

665078227 is a wasteful number, since it uses less digits than its factorization.

665078227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18773.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 665078227 is about 25789.1106283253. The cubic root of 665078227 is about 872.8860980330.

The spelling of 665078227 in words is "six hundred sixty-five million, seventy-eight thousand, two hundred twenty-seven".