328669 has 4 divisors (see below), whose sum is σ = 358560. Its totient is φ = 298780.

The previous prime is 328667. The next prime is 328687. The reversal of 328669 is 966823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 328669 - 2¹ = 328667 is a prime.

It is a super-2 number, since 2×328669² = 216046623122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14929 + ... + 14950.

It is an arithmetic number, because the mean of its divisors is an integer number (89640).

2³²⁸⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

328669 is a deficient number, since it is larger than the sum of its proper divisors (29891).

328669 is a wasteful number, since it uses less digits than its factorization.

328669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29890.

The product of its digits is 15552, while the sum is 34.

The square root of 328669 is about 573.2966073509. The cubic root of 328669 is about 69.0112003102.

The spelling of 328669 in words is "three hundred twenty-eight thousand, six hundred sixty-nine".