326620243 has 16 divisors (see below), whose sum is σ = 346661280. Its totient is φ = 307270656.

The previous prime is 326620223. The next prime is 326620271. The reversal of 326620243 is 342026623.

It is a cyclic number.

It is not a de Polignac number, because 326620243 - 2⁵ = 326620211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326620213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187605 + ... + 189337.

It is an arithmetic number, because the mean of its divisors is an integer number (21666330).

Almost surely, 2^326620243 is an apocalyptic number.

326620243 is a deficient number, since it is larger than the sum of its proper divisors (20041037).

326620243 is a wasteful number, since it uses less digits than its factorization.

326620243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 326620243 is about 18072.6379646138. The cubic root of 326620243 is about 688.6750763852.

Adding to 326620243 its reverse (342026623), we get a palindrome (668646866).

The spelling of 326620243 in words is "three hundred twenty-six million, six hundred twenty thousand, two hundred forty-three".