667329 has 16 divisors (see below), whose sum is σ = 975744. Its totient is φ = 403200.

The previous prime is 667321. The next prime is 667333. The reversal of 667329 is 923766.

It is not a de Polignac number, because 667329 - 2³ = 667321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667329.

It is not an unprimeable number, because it can be changed into a prime (667321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2649 + ... + 2889.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2⁶⁶⁷³²⁹ is an apocalyptic number.

It is an amenable number.

667329 is a deficient number, since it is larger than the sum of its proper divisors (308415).

667329 is a wasteful number, since it uses less digits than its factorization.

667329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its digits is 13608, while the sum is 33.

The square root of 667329 is about 816.9020749147. The cubic root of 667329 is about 87.3869669713.

The spelling of 667329 in words is "six hundred sixty-seven thousand, three hundred twenty-nine".