664873327 has 8 divisors (see below), whose sum is σ = 714758400. Its totient is φ = 616477464.

The previous prime is 664873303. The next prime is 664873357. The reversal of 664873327 is 723378466.

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 664873327 - 2¹¹ = 664871279 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 (664873357) 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, 371377 + ... + 373162.

It is an arithmetic number, because the mean of its divisors is an integer number (89344800).

Almost surely, 2^664873327 is an apocalyptic number.

664873327 is a deficient number, since it is larger than the sum of its proper divisors (49885073).

664873327 is a wasteful number, since it uses less digits than its factorization.

664873327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744605.

The product of its digits is 1016064, while the sum is 46.

The square root of 664873327 is about 25785.1377153584. The cubic root of 664873327 is about 872.7964480617.

The spelling of 664873327 in words is "six hundred sixty-four million, eight hundred seventy-three thousand, three hundred twenty-seven".