66039384 has 32 divisors (see below), whose sum is σ = 165654720. Its totient is φ = 21938976.

The previous prime is 66039313. The next prime is 66039401. The reversal of 66039384 is 48393066.

It is a super-2 number, since 2×66039384² = 8722400478198912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2887 + ... + 11849.

It is an arithmetic number, because the mean of its divisors is an integer number (5176710).

Almost surely, 2^66039384 is an apocalyptic number.

It is an amenable number.

66039384 is an abundant number, since it is smaller than the sum of its proper divisors (99615336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66039384 is a wasteful number, since it uses less digits than its factorization.

66039384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9279 (or 9275 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 66039384 is about 8126.4619607797. The cubic root of 66039384 is about 404.2043700163.

The spelling of 66039384 in words is "sixty-six million, thirty-nine thousand, three hundred eighty-four".