66003717 has 16 divisors (see below), whose sum is σ = 95079488. Its totient is φ = 40487040.

The previous prime is 66003703. The next prime is 66003719. The reversal of 66003717 is 71730066.

It is not a de Polignac number, because 66003717 - 2¹⁰ = 66002693 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 (66003719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10353 + ... + 15465.

It is an arithmetic number, because the mean of its divisors is an integer number (5942468).

Almost surely, 2^66003717 is an apocalyptic number.

It is an amenable number.

66003717 is a deficient number, since it is larger than the sum of its proper divisors (29075771).

66003717 is a wasteful number, since it uses less digits than its factorization.

66003717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 66003717 is about 8124.2671669511. The cubic root of 66003717 is about 404.1315884295.

The spelling of 66003717 in words is "sixty-six million, three thousand, seven hundred seventeen".