667347 has 8 divisors (see below), whose sum is σ = 895440. Its totient is φ = 442080.

The previous prime is 667333. The next prime is 667351. The reversal of 667347 is 743766.

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

It is not a de Polignac number, because 667347 - 2⁶ = 667283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667367) 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 7 ways as a sum of consecutive naturals, for example, 72 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (111930).

2⁶⁶⁷³⁴⁷ is an apocalyptic number.

667347 is a deficient number, since it is larger than the sum of its proper divisors (228093).

667347 is a wasteful number, since it uses less digits than its factorization.

667347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413.

The product of its digits is 21168, while the sum is 33.

The square root of 667347 is about 816.9130920728. The cubic root of 667347 is about 87.3877526663.

The spelling of 667347 in words is "six hundred sixty-seven thousand, three hundred forty-seven".