667845327 has 4 divisors (see below), whose sum is σ = 890460440. Its totient is φ = 445230216.

The previous prime is 667845287. The next prime is 667845329. The reversal of 667845327 is 723548766.

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

It is not a de Polignac number, because 667845327 - 2¹¹ = 667843279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667845329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111307552 + ... + 111307557.

It is an arithmetic number, because the mean of its divisors is an integer number (222615110).

Almost surely, 2^667845327 is an apocalyptic number.

667845327 is a deficient number, since it is larger than the sum of its proper divisors (222615113).

667845327 is a wasteful number, since it uses less digits than its factorization.

667845327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222615112.

The product of its digits is 1693440, while the sum is 48.

The square root of 667845327 is about 25842.7035543884. The cubic root of 667845327 is about 874.0949889516.

The spelling of 667845327 in words is "six hundred sixty-seven million, eight hundred forty-five thousand, three hundred twenty-seven".