165324729 has 8 divisors (see below), whose sum is σ = 220499872. Its totient is φ = 110183040.

The previous prime is 165324721. The next prime is 165324739. The reversal of 165324729 is 927423561.

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

It is not a de Polignac number, because 165324729 - 2³ = 165324721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165324721) 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, 7434 + ... + 19644.

It is an arithmetic number, because the mean of its divisors is an integer number (27562484).

Almost surely, 2^165324729 is an apocalyptic number.

It is an amenable number.

165324729 is a deficient number, since it is larger than the sum of its proper divisors (55175143).

165324729 is a wasteful number, since it uses less digits than its factorization.

165324729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16727.

The product of its digits is 90720, while the sum is 39.

The square root of 165324729 is about 12857.8664248778. The cubic root of 165324729 is about 548.8402327392.

The spelling of 165324729 in words is "one hundred sixty-five million, three hundred twenty-four thousand, seven hundred twenty-nine".