327996643 has 4 divisors (see below), whose sum is σ = 353227168. Its totient is φ = 302766120.

The previous prime is 327996637. The next prime is 327996649. The reversal of 327996643 is 346699723.

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

It is an interprime number because it is at equal distance from previous prime (327996637) and next prime (327996649).

It is a cyclic number.

It is not a de Polignac number, because 327996643 - 2⁵ = 327996611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (327996649) 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, 12615243 + ... + 12615268.

It is an arithmetic number, because the mean of its divisors is an integer number (88306792).

Almost surely, 2^327996643 is an apocalyptic number.

327996643 is a deficient number, since it is larger than the sum of its proper divisors (25230525).

327996643 is a wasteful number, since it uses less digits than its factorization.

327996643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25230524.

The product of its digits is 1469664, while the sum is 49.

The square root of 327996643 is about 18110.6775963794. The cubic root of 327996643 is about 689.6410952910.

The spelling of 327996643 in words is "three hundred twenty-seven million, nine hundred ninety-six thousand, six hundred forty-three".