326891 has 4 divisors (see below), whose sum is σ = 330000. Its totient is φ = 323784.

The previous prime is 326881. The next prime is 326903. The reversal of 326891 is 198623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 326891 - 2¹⁴ = 310507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326831) 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, 1391 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (82500).

2³²⁶⁸⁹¹ is an apocalyptic number.

326891 is a deficient number, since it is larger than the sum of its proper divisors (3109).

326891 is a wasteful number, since it uses less digits than its factorization.

326891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its digits is 2592, while the sum is 29.

The square root of 326891 is about 571.7438237533. The cubic root of 326891 is about 68.8865319847.

The spelling of 326891 in words is "three hundred twenty-six thousand, eight hundred ninety-one".