66324145 has 8 divisors (see below), whose sum is σ = 79689960. Its totient is φ = 52992000.

The previous prime is 66324133. The next prime is 66324161. The reversal of 66324145 is 54142366.

66324145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18326961 + 47997184 = 4281^2 + 6928^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66324145 - 2⁹ = 66323633 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3856 + ... + 12145.

It is an arithmetic number, because the mean of its divisors is an integer number (9961245).

Almost surely, 2^66324145 is an apocalyptic number.

It is an amenable number.

66324145 is a deficient number, since it is larger than the sum of its proper divisors (13365815).

66324145 is a wasteful number, since it uses less digits than its factorization.

66324145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16835.

The product of its digits is 17280, while the sum is 31.

The square root of 66324145 is about 8143.9637155380. The cubic root of 66324145 is about 404.7845116928.

The spelling of 66324145 in words is "sixty-six million, three hundred twenty-four thousand, one hundred forty-five".