667342 has 8 divisors (see below), whose sum is σ = 1078056. Its totient is φ = 307992.

The previous prime is 667333. The next prime is 667351. The reversal of 667342 is 243766.

It is an interprime number because it is at equal distance from previous prime (667333) and next prime (667351).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 667342.

It is a congruent number.

It is an unprimeable number.

667342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 12808 + ... + 12859.

It is an arithmetic number, because the mean of its divisors is an integer number (134757).

2⁶⁶⁷³⁴² is an apocalyptic number.

667342 is a deficient number, since it is larger than the sum of its proper divisors (410714).

667342 is a wasteful number, since it uses less digits than its factorization.

667342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25682.

The product of its digits is 6048, while the sum is 28.

The square root of 667342 is about 816.9100317660. The cubic root of 667342 is about 87.3875344191.

The spelling of 667342 in words is "six hundred sixty-seven thousand, three hundred forty-two".