165216327 has 8 divisors (see below), whose sum is σ = 224975616. Its totient is φ = 107800632.

The previous prime is 165216287. The next prime is 165216349. The reversal of 165216327 is 723612561.

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

It is not a de Polignac number, because 165216327 - 2⁶ = 165216263 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165215327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585733 + ... + 586014.

It is an arithmetic number, because the mean of its divisors is an integer number (28121952).

Almost surely, 2^165216327 is an apocalyptic number.

165216327 is a deficient number, since it is larger than the sum of its proper divisors (59759289).

165216327 is a wasteful number, since it uses less digits than its factorization.

165216327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171797.

The product of its digits is 15120, while the sum is 33.

The square root of 165216327 is about 12853.6503375500. The cubic root of 165216327 is about 548.7202499079.

Adding to 165216327 its reverse (723612561), we get a palindrome (888828888).

The spelling of 165216327 in words is "one hundred sixty-five million, two hundred sixteen thousand, three hundred twenty-seven".