667339 has 4 divisors (see below), whose sum is σ = 672280. Its totient is φ = 662400.

The previous prime is 667333. The next prime is 667351. The reversal of 667339 is 933766.

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 667339 - 2⁷ = 667211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2262 + ... + 2539.

It is an arithmetic number, because the mean of its divisors is an integer number (168070).

2⁶⁶⁷³³⁹ is an apocalyptic number.

667339 is a deficient number, since it is larger than the sum of its proper divisors (4941).

667339 is a wasteful number, since it uses less digits than its factorization.

667339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940.

The product of its digits is 20412, while the sum is 34.

The square root of 667339 is about 816.9081955765. The cubic root of 667339 is about 87.3874034703.

The spelling of 667339 in words is "six hundred sixty-seven thousand, three hundred thirty-nine".