66384897 has 8 divisors (see below), whose sum is σ = 89964480. Its totient is φ = 43530960.

The previous prime is 66384893. The next prime is 66384907. The reversal of 66384897 is 79848366.

66384897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 66384897 - 2² = 66384893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66384893) 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 7 ways as a sum of consecutive naturals, for example, 181197 + ... + 181562.

It is an arithmetic number, because the mean of its divisors is an integer number (11245560).

Almost surely, 2^66384897 is an apocalyptic number.

It is an amenable number.

66384897 is a deficient number, since it is larger than the sum of its proper divisors (23579583).

66384897 is a wasteful number, since it uses less digits than its factorization.

66384897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362823.

The product of its digits is 1741824, while the sum is 51.

The square root of 66384897 is about 8147.6927408930. The cubic root of 66384897 is about 404.9080663148.

The spelling of 66384897 in words is "sixty-six million, three hundred eighty-four thousand, eight hundred ninety-seven".