166567 has 2 divisors, whose sum is σ = 166568. Its totient is φ = 166566.

The previous prime is 166561. The next prime is 166571. The reversal of 166567 is 765661.

166567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83283 + 83284.

It is an arithmetic number, because the mean of its divisors is an integer number (83284).

2¹⁶⁶⁵⁶⁷ is an apocalyptic number.

166567 is a deficient number, since it is larger than the sum of its proper divisors (1).

166567 is an equidigital number, since it uses as much as digits as its factorization.

166567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 166567 is about 408.1262059707. The cubic root of 166567 is about 55.0211488915.

The spelling of 166567 in words is "one hundred sixty-six thousand, five hundred sixty-seven".