165468805 has 8 divisors (see below), whose sum is σ = 200529144. Its totient is φ = 131064000.

The previous prime is 165468799. The next prime is 165468833. The reversal of 165468805 is 508864561.

It can be written as a sum of positive squares in 4 ways, for example, as 10764961 + 154703844 = 3281^2 + 12438^2 .

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

It is not a de Polignac number, because 165468805 - 2¹¹ = 165466757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163326 + ... + 164335.

It is an arithmetic number, because the mean of its divisors is an integer number (25066143).

Almost surely, 2^165468805 is an apocalyptic number.

It is an amenable number.

165468805 is a deficient number, since it is larger than the sum of its proper divisors (35060339).

165468805 is a wasteful number, since it uses less digits than its factorization.

165468805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327767.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 165468805 is about 12863.4678450253. The cubic root of 165468805 is about 548.9996195542. Note that the first 3 decimals are identical.

The spelling of 165468805 in words is "one hundred sixty-five million, four hundred sixty-eight thousand, eight hundred five".