165329647 has 8 divisors (see below), whose sum is σ = 189400352. Its totient is φ = 141372000.

The previous prime is 165329629. The next prime is 165329651. The reversal of 165329647 is 746923561.

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

It is not a de Polignac number, because 165329647 - 2¹¹ = 165327599 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 (165329687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25104 + ... + 30997.

It is an arithmetic number, because the mean of its divisors is an integer number (23675044).

Almost surely, 2^165329647 is an apocalyptic number.

165329647 is a deficient number, since it is larger than the sum of its proper divisors (24070705).

165329647 is an equidigital number, since it uses as much as digits as its factorization.

165329647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56529.

The product of its digits is 272160, while the sum is 43.

The square root of 165329647 is about 12858.0576682483. The cubic root of 165329647 is about 548.8456748964.

The spelling of 165329647 in words is "one hundred sixty-five million, three hundred twenty-nine thousand, six hundred forty-seven".