66115383 has 8 divisors (see below), whose sum is σ = 92793600. Its totient is φ = 41757048.

The previous prime is 66115351. The next prime is 66115403. The reversal of 66115383 is 38351166.

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

It is not a de Polignac number, because 66115383 - 2⁵ = 66115351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66115183) 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 7 ways as a sum of consecutive naturals, for example, 579903 + ... + 580016.

It is an arithmetic number, because the mean of its divisors is an integer number (11599200).

Almost surely, 2^66115383 is an apocalyptic number.

66115383 is a deficient number, since it is larger than the sum of its proper divisors (26678217).

66115383 is a wasteful number, since it uses less digits than its factorization.

66115383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159941.

The product of its digits is 12960, while the sum is 33.

The square root of 66115383 is about 8131.1366364119. The cubic root of 66115383 is about 404.3593651601.

The spelling of 66115383 in words is "sixty-six million, one hundred fifteen thousand, three hundred eighty-three".