66384107 has 4 divisors (see below), whose sum is σ = 66676776. Its totient is φ = 66091440.

The previous prime is 66384091. The next prime is 66384127. The reversal of 66384107 is 70148366.

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 66384107 - 2⁴ = 66384091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66384127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145994 + ... + 146447.

It is an arithmetic number, because the mean of its divisors is an integer number (16669194).

Almost surely, 2^66384107 is an apocalyptic number.

66384107 is a deficient number, since it is larger than the sum of its proper divisors (292669).

66384107 is a wasteful number, since it uses less digits than its factorization.

66384107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292668.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66384107 is about 8147.6442607664. The cubic root of 66384107 is about 404.9064601330.

The spelling of 66384107 in words is "sixty-six million, three hundred eighty-four thousand, one hundred seven".