667711327 has 4 divisors (see below), whose sum is σ = 667960696. Its totient is φ = 667461960.

The previous prime is 667711313. The next prime is 667711333. The reversal of 667711327 is 723117766.

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 667711327 - 2¹⁵ = 667678559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667711327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667711027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120624 + ... + 126037.

It is an arithmetic number, because the mean of its divisors is an integer number (166990174).

Almost surely, 2^667711327 is an apocalyptic number.

667711327 is a deficient number, since it is larger than the sum of its proper divisors (249369).

667711327 is a wasteful number, since it uses less digits than its factorization.

667711327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249368.

The product of its digits is 74088, while the sum is 40.

The square root of 667711327 is about 25840.1108163258. The cubic root of 667711327 is about 874.0365240354.

The spelling of 667711327 in words is "six hundred sixty-seven million, seven hundred eleven thousand, three hundred twenty-seven".