667133 has 4 divisors (see below), whose sum is σ = 671040. Its totient is φ = 663228.

The previous prime is 667129. The next prime is 667141. The reversal of 667133 is 331766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331766 = 2 ⋅165883.

It is a cyclic number.

It is not a de Polignac number, because 667133 - 2² = 667129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (167760).

2⁶⁶⁷¹³³ is an apocalyptic number.

It is an amenable number.

667133 is a deficient number, since it is larger than the sum of its proper divisors (3907).

667133 is a wasteful number, since it uses less digits than its factorization.

667133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906.

The product of its digits is 2268, while the sum is 26.

The square root of 667133 is about 816.7821006854. The cubic root of 667133 is about 87.3784107106.

Adding to 667133 its reverse (331766), we get a palindrome (998899).

The spelling of 667133 in words is "six hundred sixty-seven thousand, one hundred thirty-three".