66326147 has 4 divisors (see below), whose sum is σ = 66342936. Its totient is φ = 66309360.

The previous prime is 66326107. The next prime is 66326149. The reversal of 66326147 is 74162366.

66326147 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 a de Polignac number, because none of the positive numbers 2^k-66326147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66326149) 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, 1148 + ... + 11574.

It is an arithmetic number, because the mean of its divisors is an integer number (16585734).

Almost surely, 2^66326147 is an apocalyptic number.

66326147 is a deficient number, since it is larger than the sum of its proper divisors (16789).

66326147 is a wasteful number, since it uses less digits than its factorization.

66326147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16788.

The product of its digits is 36288, while the sum is 35.

The square root of 66326147 is about 8144.0866277318. The cubic root of 66326147 is about 404.7885844702.

The spelling of 66326147 in words is "sixty-six million, three hundred twenty-six thousand, one hundred forty-seven".