329865 has 8 divisors (see below), whose sum is σ = 527808. Its totient is φ = 175920.

The previous prime is 329863. The next prime is 329867. The reversal of 329865 is 568923.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (329863) and next prime (329867).

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

It is not a de Polignac number, because 329865 - 2¹ = 329863 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 329865.

It is not an unprimeable number, because it can be changed into a prime (329863) 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, 10981 + ... + 11010.

It is an arithmetic number, because the mean of its divisors is an integer number (65976).

2³²⁹⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

329865 is a deficient number, since it is larger than the sum of its proper divisors (197943).

329865 is a wasteful number, since it uses less digits than its factorization.

329865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21999.

The product of its digits is 12960, while the sum is 33.

The square root of 329865 is about 574.3387502163. The cubic root of 329865 is about 69.0948077104.

The spelling of 329865 in words is "three hundred twenty-nine thousand, eight hundred sixty-five".