165234065 has 4 divisors (see below), whose sum is σ = 198280884. Its totient is φ = 132187248.

The previous prime is 165234037. The next prime is 165234071. The reversal of 165234065 is 560432561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42667024 + 122567041 = 6532^2 + 11071^2 .

It is a cyclic number.

It is not a de Polignac number, because 165234065 - 2¹⁶ = 165168529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 16523402 + ... + 16523411.

It is an arithmetic number, because the mean of its divisors is an integer number (49570221).

Almost surely, 2^165234065 is an apocalyptic number.

It is an amenable number.

165234065 is a deficient number, since it is larger than the sum of its proper divisors (33046819).

165234065 is an equidigital number, since it uses as much as digits as its factorization.

165234065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33046818.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 165234065 is about 12854.3403175737. The cubic root of 165234065 is about 548.7398864892.

The spelling of 165234065 in words is "one hundred sixty-five million, two hundred thirty-four thousand, sixty-five".