166287 has 8 divisors (see below), whose sum is σ = 241920. Its totient is φ = 100760.

The previous prime is 166273. The next prime is 166289. The reversal of 166287 is 782661.

It is a happy number.

166287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166287 - 2⁸ = 166031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2487 + ... + 2552.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2¹⁶⁶²⁸⁷ is an apocalyptic number.

166287 is a deficient number, since it is larger than the sum of its proper divisors (75633).

166287 is a wasteful number, since it uses less digits than its factorization.

166287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053.

The product of its digits is 4032, while the sum is 30.

The square root of 166287 is about 407.7830305444. The cubic root of 166287 is about 54.9903013201.

The spelling of 166287 in words is "one hundred sixty-six thousand, two hundred eighty-seven".