66324623 has 4 divisors (see below), whose sum is σ = 67008480. Its totient is φ = 65640768.

The previous prime is 66324613. The next prime is 66324697. The reversal of 66324623 is 32642366.

66324623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66324623 - 2⁸ = 66324367 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 66324623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66324613) 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, 341783 + ... + 341976.

It is an arithmetic number, because the mean of its divisors is an integer number (16752120).

Almost surely, 2^66324623 is an apocalyptic number.

66324623 is a deficient number, since it is larger than the sum of its proper divisors (683857).

66324623 is an equidigital number, since it uses as much as digits as its factorization.

66324623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683856.

The product of its digits is 31104, while the sum is 32.

The square root of 66324623 is about 8143.9930623743. The cubic root of 66324623 is about 404.7854841216.

Adding to 66324623 its reverse (32642366), we get a palindrome (98966989).

The spelling of 66324623 in words is "sixty-six million, three hundred twenty-four thousand, six hundred twenty-three".