66140317 has 8 divisors (see below), whose sum is σ = 66981824. Its totient is φ = 65302848.

The previous prime is 66140297. The next prime is 66140351. The reversal of 66140317 is 71304166.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66140317 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 (66140917) 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, 43858 + ... + 45340.

It is an arithmetic number, because the mean of its divisors is an integer number (8372728).

Almost surely, 2^66140317 is an apocalyptic number.

It is an amenable number.

66140317 is a deficient number, since it is larger than the sum of its proper divisors (841507).

66140317 is a wasteful number, since it uses less digits than its factorization.

66140317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66140317 is about 8132.6697338574. The cubic root of 66140317 is about 404.4101905947.

The spelling of 66140317 in words is "sixty-six million, one hundred forty thousand, three hundred seventeen".