667267 has 4 divisors (see below), whose sum is σ = 706536. Its totient is φ = 628000.

The previous prime is 667243. The next prime is 667273. The reversal of 667267 is 762766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 762766 = 2 ⋅381383.

It is a cyclic number.

It is not a de Polignac number, because 667267 - 2¹⁵ = 634499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19609 + ... + 19642.

It is an arithmetic number, because the mean of its divisors is an integer number (176634).

2⁶⁶⁷²⁶⁷ is an apocalyptic number.

667267 is a deficient number, since it is larger than the sum of its proper divisors (39269).

667267 is a wasteful number, since it uses less digits than its factorization.

667267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39268.

The product of its digits is 21168, while the sum is 34.

The square root of 667267 is about 816.8641257884. The cubic root of 667267 is about 87.3842605802.

The spelling of 667267 in words is "six hundred sixty-seven thousand, two hundred sixty-seven".