166487 has 2 divisors, whose sum is σ = 166488. Its totient is φ = 166486.

The previous prime is 166471. The next prime is 166541. The reversal of 166487 is 784661.

166487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (784661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166487 - 2⁴ = 166471 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 (166417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83243 + 83244.

It is an arithmetic number, because the mean of its divisors is an integer number (83244).

2¹⁶⁶⁴⁸⁷ is an apocalyptic number.

166487 is a deficient number, since it is larger than the sum of its proper divisors (1).

166487 is an equidigital number, since it uses as much as digits as its factorization.

166487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 166487 is about 408.0281853010. The cubic root of 166487 is about 55.0123388295.

The spelling of 166487 in words is "one hundred sixty-six thousand, four hundred eighty-seven".