326640014 has 4 divisors (see below), whose sum is σ = 489960024. Its totient is φ = 163320006.

The previous prime is 326640011. The next prime is 326640037. The reversal of 326640014 is 410046623.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326640011) 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 as a sum of consecutive naturals, namely, 81660002 + ... + 81660005.

It is an arithmetic number, because the mean of its divisors is an integer number (122490006).

Almost surely, 2^326640014 is an apocalyptic number.

326640014 is a deficient number, since it is larger than the sum of its proper divisors (163320010).

326640014 is a wasteful number, since it uses less digits than its factorization.

326640014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163320009.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 326640014 is about 18073.1849434459. The cubic root of 326640014 is about 688.6889717479.

Adding to 326640014 its reverse (410046623), we get a palindrome (736686637).

The spelling of 326640014 in words is "three hundred twenty-six million, six hundred forty thousand, fourteen".