326505623 has 4 divisors (see below), whose sum is σ = 326546088. Its totient is φ = 326465160.

The previous prime is 326505607. The next prime is 326505679.

326505623 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 326505623 - 2⁴ = 326505607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 326505623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326525623) 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, 3536 + ... + 25797.

It is an arithmetic number, because the mean of its divisors is an integer number (81636522).

Almost surely, 2^326505623 is an apocalyptic number.

326505623 is a deficient number, since it is larger than the sum of its proper divisors (40465).

326505623 is a wasteful number, since it uses less digits than its factorization.

326505623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40464.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 326505623 is about 18069.4665942302. The cubic root of 326505623 is about 688.5945086369.

The spelling of 326505623 in words is "three hundred twenty-six million, five hundred five thousand, six hundred twenty-three".