66040117 has 8 divisors (see below), whose sum is σ = 77585760. Its totient is φ = 55418160.

The previous prime is 66040111. The next prime is 66040171. The reversal of 66040117 is 71104066.

It is a happy number.

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 66040117 - 2³ = 66040109 is a prime.

It is a super-2 number, since 2×66040117² = 8722594106747378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66040091 and 66040100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66040111) 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, 230767 + ... + 231052.

It is an arithmetic number, because the mean of its divisors is an integer number (9698220).

Almost surely, 2^66040117 is an apocalyptic number.

It is an amenable number.

66040117 is a deficient number, since it is larger than the sum of its proper divisors (11545643).

66040117 is a wasteful number, since it uses less digits than its factorization.

66040117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461843.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 66040117 is about 8126.5070602320. The cubic root of 66040117 is about 404.2058654911.

The spelling of 66040117 in words is "sixty-six million, forty thousand, one hundred seventeen".