165887323 has 8 divisors (see below), whose sum is σ = 189729792. Its totient is φ = 142080936.

The previous prime is 165887269. The next prime is 165887327. The reversal of 165887323 is 323788561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165887323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165887323.

It is not an unprimeable number, because it can be changed into a prime (165887327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1686 + ... + 18292.

It is an arithmetic number, because the mean of its divisors is an integer number (23716224).

Almost surely, 2^165887323 is an apocalyptic number.

165887323 is a deficient number, since it is larger than the sum of its proper divisors (23842469).

165887323 is a wasteful number, since it uses less digits than its factorization.

165887323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18041.

The product of its digits is 241920, while the sum is 43.

The square root of 165887323 is about 12879.7252688091. The cubic root of 165887323 is about 549.4620889597.

The spelling of 165887323 in words is "one hundred sixty-five million, eight hundred eighty-seven thousand, three hundred twenty-three".