328661033 has 4 divisors (see below), whose sum is σ = 328707408. Its totient is φ = 328614660.

The previous prime is 328661009. The next prime is 328661041. The reversal of 328661033 is 330166823.

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, and also an emirpimes, since its reverse is a distinct semiprime: 330166823 = 7 ⋅47166689.

It is a cyclic number.

It is not a de Polignac number, because 328661033 - 2¹⁶ = 328595497 is a prime.

It is a super-2 number, since 2×328661033² = 216036149225254178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328661633) 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, 10091 + ... + 27552.

It is an arithmetic number, because the mean of its divisors is an integer number (82176852).

Almost surely, 2^328661033 is an apocalyptic number.

It is an amenable number.

328661033 is a deficient number, since it is larger than the sum of its proper divisors (46375).

328661033 is an equidigital number, since it uses as much as digits as its factorization.

328661033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46374.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 328661033 is about 18129.0108114039. The cubic root of 328661033 is about 690.1064269079.

The spelling of 328661033 in words is "three hundred twenty-eight million, six hundred sixty-one thousand, thirty-three".