667167 has 4 divisors (see below), whose sum is σ = 889560. Its totient is φ = 444776.

The previous prime is 667141. The next prime is 667171. The reversal of 667167 is 761766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 667167 - 2⁶ = 667103 is a prime.

It is a super-2 number, since 2×667167² = 890223611778, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667127) 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 3 ways as a sum of consecutive naturals, for example, 111192 + ... + 111197.

It is an arithmetic number, because the mean of its divisors is an integer number (222390).

2⁶⁶⁷¹⁶⁷ is an apocalyptic number.

667167 is a deficient number, since it is larger than the sum of its proper divisors (222393).

667167 is a wasteful number, since it uses less digits than its factorization.

667167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222392.

The product of its digits is 10584, while the sum is 33.

The square root of 667167 is about 816.8029138048. The cubic root of 667167 is about 87.3798950800.

The spelling of 667167 in words is "six hundred sixty-seven thousand, one hundred sixty-seven".