66067117 has 16 divisors (see below), whose sum is σ = 71608320. Its totient is φ = 60728832.

The previous prime is 66067093. The next prime is 66067121. The reversal of 66067117 is 71176066.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66067117 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 (66067217) 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, 172308 + ... + 172690.

It is an arithmetic number, because the mean of its divisors is an integer number (4475520).

Almost surely, 2^66067117 is an apocalyptic number.

It is an amenable number.

66067117 is a deficient number, since it is larger than the sum of its proper divisors (5541203).

66067117 is a wasteful number, since it uses less digits than its factorization.

66067117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 66067117 is about 8128.1681208007. The cubic root of 66067117 is about 404.2609434846.

The spelling of 66067117 in words is "sixty-six million, sixty-seven thousand, one hundred seventeen".