66005017 has 8 divisors (see below), whose sum is σ = 71398656. Its totient is φ = 60656592.

The previous prime is 66004987. The next prime is 66005021. The reversal of 66005017 is 71050066.

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

It is a cyclic number.

It is not a de Polignac number, because 66005017 - 2²³ = 57616409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66004982 and 66005000.

It is not an unprimeable number, because it can be changed into a prime (66005717) 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, 8233 + ... + 14134.

It is an arithmetic number, because the mean of its divisors is an integer number (8924832).

Almost surely, 2^66005017 is an apocalyptic number.

It is an amenable number.

66005017 is a deficient number, since it is larger than the sum of its proper divisors (5393639).

66005017 is a wasteful number, since it uses less digits than its factorization.

66005017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 66005017 is about 8124.3471737734. The cubic root of 66005017 is about 404.1342416519.

The spelling of 66005017 in words is "sixty-six million, five thousand, seventeen".