66115005 has 48 divisors (see below), whose sum is σ = 118104000. Its totient is φ = 31553280.

The previous prime is 66114977. The next prime is 66115013. The reversal of 66115005 is 50051166.

It is not a de Polignac number, because 66115005 - 2⁶ = 66114941 is a prime.

It is a Curzon number.

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 47 ways as a sum of consecutive naturals, for example, 132246 + ... + 132744.

It is an arithmetic number, because the mean of its divisors is an integer number (2460500).

Almost surely, 2^66115005 is an apocalyptic number.

It is an amenable number.

66115005 is a deficient number, since it is larger than the sum of its proper divisors (51988995).

66115005 is a wasteful number, since it uses less digits than its factorization.

66115005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 66115005 is about 8131.1133923959. The cubic root of 66115005 is about 404.3585945470.

The spelling of 66115005 in words is "sixty-six million, one hundred fifteen thousand, five".