165689341 has 8 divisors (see below), whose sum is σ = 169097400. Its totient is φ = 162312192.

The previous prime is 165689339. The next prime is 165689347. The reversal of 165689341 is 143986561.

It can be written as a sum of positive squares in 4 ways, for example, as 52441 + 165636900 = 229^2 + 12870^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 165689341 - 2¹ = 165689339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165689347) 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, 3261 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (21137175).

Almost surely, 2^165689341 is an apocalyptic number.

It is an amenable number.

165689341 is a deficient number, since it is larger than the sum of its proper divisors (3408059).

165689341 is a wasteful number, since it uses less digits than its factorization.

165689341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15455.

The product of its digits is 155520, while the sum is 43.

The square root of 165689341 is about 12872.0371736567. The cubic root of 165689341 is about 549.2434125980.

The spelling of 165689341 in words is "one hundred sixty-five million, six hundred eighty-nine thousand, three hundred forty-one".