328699 has 4 divisors (see below), whose sum is σ = 375664. Its totient is φ = 281736.

The previous prime is 328687. The next prime is 328709. The reversal of 328699 is 996823.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 328699 - 2⁵ = 328667 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 (328619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23472 + ... + 23485.

It is an arithmetic number, because the mean of its divisors is an integer number (93916).

2³²⁸⁶⁹⁹ is an apocalyptic number.

328699 is a deficient number, since it is larger than the sum of its proper divisors (46965).

328699 is an equidigital number, since it uses as much as digits as its factorization.

328699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46964.

The product of its digits is 23328, while the sum is 37.

The square root of 328699 is about 573.3227712205. The cubic root of 328699 is about 69.0132999637.

Subtracting from 328699 its product of digits (23328), we obtain a triangular number (305371 = T₇₈₁).

The spelling of 328699 in words is "three hundred twenty-eight thousand, six hundred ninety-nine".