165887 has 2 divisors, whose sum is σ = 165888. Its totient is φ = 165886.

The previous prime is 165883. The next prime is 165901. The reversal of 165887 is 788561.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (788561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165887 - 2² = 165883 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165883) 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, 82943 + 82944.

It is an arithmetic number, because the mean of its divisors is an integer number (82944).

2¹⁶⁵⁸⁸⁷ is an apocalyptic number.

165887 is a deficient number, since it is larger than the sum of its proper divisors (1).

165887 is an equidigital number, since it uses as much as digits as its factorization.

165887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 35.

The square root of 165887 is about 407.2922783457. The cubic root of 165887 is about 54.9461732339.

The spelling of 165887 in words is "one hundred sixty-five thousand, eight hundred eighty-seven".