329665 has 8 divisors (see below), whose sum is σ = 452160. Its totient is φ = 226032.

The previous prime is 329663. The next prime is 329671. The reversal of 329665 is 566923.

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 329665 - 2¹ = 329663 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 2⁵ + 6⁶ + 9³ + 6⁷ + 5³ .

It is not an unprimeable number, because it can be changed into a prime (329663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4675 + ... + 4744.

It is an arithmetic number, because the mean of its divisors is an integer number (56520).

2³²⁹⁶⁶⁵ is an apocalyptic number.

329665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

329665 is a deficient number, since it is larger than the sum of its proper divisors (122495).

329665 is an equidigital number, since it uses as much as digits as its factorization.

329665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431.

The product of its digits is 9720, while the sum is 31.

The square root of 329665 is about 574.1646105430. The cubic root of 329665 is about 69.0808406276.

The spelling of 329665 in words is "three hundred twenty-nine thousand, six hundred sixty-five".