66384111 has 8 divisors (see below), whose sum is σ = 88560640. Its totient is φ = 44231832.

The previous prime is 66384091. The next prime is 66384127. The reversal of 66384111 is 11148366.

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

It is not a de Polignac number, because 66384111 - 2⁷ = 66383983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66384611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1776 + ... + 11658.

It is an arithmetic number, because the mean of its divisors is an integer number (11070080).

Almost surely, 2^66384111 is an apocalyptic number.

66384111 is a deficient number, since it is larger than the sum of its proper divisors (22176529).

66384111 is a wasteful number, since it uses less digits than its factorization.

66384111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125.

The product of its digits is 3456, while the sum is 30.

The square root of 66384111 is about 8147.6445062361. The cubic root of 66384111 is about 404.9064682656.

The spelling of 66384111 in words is "sixty-six million, three hundred eighty-four thousand, one hundred eleven".