66008307 has 4 divisors (see below), whose sum is σ = 88011080. Its totient is φ = 44005536.

The previous prime is 66008287. The next prime is 66008309. The reversal of 66008307 is 70380066.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66008307 - 2¹⁴ = 65991923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66008309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11001382 + ... + 11001387.

It is an arithmetic number, because the mean of its divisors is an integer number (22002770).

Almost surely, 2^66008307 is an apocalyptic number.

66008307 is a deficient number, since it is larger than the sum of its proper divisors (22002773).

66008307 is a wasteful number, since it uses less digits than its factorization.

66008307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22002772.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66008307 is about 8124.5496490575. The cubic root of 66008307 is about 404.1409561897.

The spelling of 66008307 in words is "sixty-six million, eight thousand, three hundred seven".