328613 has 4 divisors (see below), whose sum is σ = 329868. Its totient is φ = 327360.

The previous prime is 328591. The next prime is 328619. The reversal of 328613 is 316823.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 316823 = 13 ⋅24371.

It can be written as a sum of positive squares in 2 ways, for example, as 114244 + 214369 = 338^2 + 463^2 .

It is a cyclic number.

It is not a de Polignac number, because 328613 - 2⁸ = 328357 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 813.

It is an arithmetic number, because the mean of its divisors is an integer number (82467).

2³²⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

328613 is a deficient number, since it is larger than the sum of its proper divisors (1255).

328613 is an equidigital number, since it uses as much as digits as its factorization.

328613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254.

The product of its digits is 864, while the sum is 23.

The square root of 328613 is about 573.2477649324. The cubic root of 328613 is about 69.0072806152.

The spelling of 328613 in words is "three hundred twenty-eight thousand, six hundred thirteen".