667344 has 20 divisors (see below), whose sum is σ = 1724096. Its totient is φ = 222432.

The previous prime is 667333. The next prime is 667351. The reversal of 667344 is 443766.

It is a congruent number.

It is an unprimeable number.

667344 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6904 + ... + 6999.

2⁶⁶⁷³⁴⁴ is an apocalyptic number.

It is an amenable number.

667344 is an abundant number, since it is smaller than the sum of its proper divisors (1056752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667344 is a wasteful number, since it uses less digits than its factorization.

667344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13914 (or 13908 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 667344 is about 816.9112558901. The cubic root of 667344 is about 87.3876217181.

The spelling of 667344 in words is "six hundred sixty-seven thousand, three hundred forty-four".