328566 has 16 divisors (see below), whose sum is σ = 751104. Its totient is φ = 93864.

The previous prime is 328543. The next prime is 328579. The reversal of 328566 is 665823.

328566 = T₆₉ + T₇₀ + ... + T₁₃₁.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3² + 2¹⁸ + 5⁶ + 8⁴ + 6² + 6⁶ .

It is a congruent number.

It is an unprimeable number.

328566 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870 + ... + 3953.

It is an arithmetic number, because the mean of its divisors is an integer number (46944).

2³²⁸⁵⁶⁶ is an apocalyptic number.

328566 is an abundant number, since it is smaller than the sum of its proper divisors (422538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328566 is a wasteful number, since it uses less digits than its factorization.

328566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7835.

The product of its digits is 8640, while the sum is 30.

The square root of 328566 is about 573.2067689761. The cubic root of 328566 is about 69.0039905275.

It can be divided in two parts, 32856 and 6, that multiplied together give a square (197136 = 444²).

The spelling of 328566 in words is "three hundred twenty-eight thousand, five hundred sixty-six".