66118384 has 20 divisors (see below), whose sum is σ = 128255184. Its totient is φ = 33020288.

The previous prime is 66118379. The next prime is 66118411. The reversal of 66118384 is 48381166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15669 + ... + 19435.

Almost surely, 2^66118384 is an apocalyptic number.

It is an amenable number.

66118384 is a deficient number, since it is larger than the sum of its proper divisors (62136800).

66118384 is a wasteful number, since it uses less digits than its factorization.

66118384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872 (or 4866 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 66118384 is about 8131.3211718638. The cubic root of 66118384 is about 404.3654830711.

The spelling of 66118384 in words is "sixty-six million, one hundred eighteen thousand, three hundred eighty-four".