66325618 has 16 divisors (see below), whose sum is σ = 107281440. Its totient is φ = 30650400.

The previous prime is 66325579. The next prime is 66325643. The reversal of 66325618 is 81652366.

66325618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 19728 + ... + 22843.

It is an arithmetic number, because the mean of its divisors is an integer number (6705090).

Almost surely, 2^66325618 is an apocalyptic number.

66325618 is a deficient number, since it is larger than the sum of its proper divisors (40955822).

66325618 is a wasteful number, since it uses less digits than its factorization.

66325618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42633.

The product of its digits is 51840, while the sum is 37.

The square root of 66325618 is about 8144.0541501147. The cubic root of 66325618 is about 404.7875083047.

The spelling of 66325618 in words is "sixty-six million, three hundred twenty-five thousand, six hundred eighteen".