669167 has 2 divisors, whose sum is σ = 669168. Its totient is φ = 669166.

The previous prime is 669133. The next prime is 669173. The reversal of 669167 is 761966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669167 - 2¹⁸ = 407023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669107) 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 as a sum of consecutive naturals, namely, 334583 + 334584.

It is an arithmetic number, because the mean of its divisors is an integer number (334584).

2⁶⁶⁹¹⁶⁷ is an apocalyptic number.

669167 is a deficient number, since it is larger than the sum of its proper divisors (1).

669167 is an equidigital number, since it uses as much as digits as its factorization.

669167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 669167 is about 818.0262831963. The cubic root of 669167 is about 87.4671223418.

The spelling of 669167 in words is "six hundred sixty-nine thousand, one hundred sixty-seven".