326641 has 4 divisors (see below), whose sum is σ = 373312. Its totient is φ = 279972.

The previous prime is 326633. The next prime is 326657. The reversal of 326641 is 146623.

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: 146623 = 19 ⋅7717.

It is not a de Polignac number, because 326641 - 2³ = 326633 is a prime.

It is an Ulam number.

It is a Duffinian number.

326641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (326611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23325 + ... + 23338.

It is an arithmetic number, because the mean of its divisors is an integer number (93328).

2³²⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

326641 is a deficient number, since it is larger than the sum of its proper divisors (46671).

326641 is an equidigital number, since it uses as much as digits as its factorization.

326641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46670.

The product of its digits is 864, while the sum is 22.

The square root of 326641 is about 571.5251525524. The cubic root of 326641 is about 68.8689664709.

The spelling of 326641 in words is "three hundred twenty-six thousand, six hundred forty-one".