165087 has 24 divisors (see below), whose sum is σ = 275184. Its totient is φ = 94464.

The previous prime is 165083. The next prime is 165089. The reversal of 165087 is 780561.

165087 is a `hidden beast` number, since 1 + 650 + 8 + 7 = 666.

It is not a de Polignac number, because 165087 - 2² = 165083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165087.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 165087.

It is not an unprimeable number, because it can be changed into a prime (165083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1948 + ... + 2030.

It is an arithmetic number, because the mean of its divisors is an integer number (11466).

2¹⁶⁵⁰⁸⁷ is an apocalyptic number.

165087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

165087 is a deficient number, since it is larger than the sum of its proper divisors (110097).

165087 is a wasteful number, since it uses less digits than its factorization.

165087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 165087 is about 406.3089957163. The cubic root of 165087 is about 54.8577037936.

The spelling of 165087 in words is "one hundred sixty-five thousand, eighty-seven".