66001307 has 4 divisors (see below), whose sum is σ = 69475080. Its totient is φ = 62527536.

The previous prime is 66001297. The next prime is 66001321. The reversal of 66001307 is 70310066.

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

It is a cyclic number.

It is not a de Polignac number, because 66001307 - 2⁴ = 66001291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66001357) 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 3 ways as a sum of consecutive naturals, for example, 1736858 + ... + 1736895.

It is an arithmetic number, because the mean of its divisors is an integer number (17368770).

Almost surely, 2^66001307 is an apocalyptic number.

66001307 is a deficient number, since it is larger than the sum of its proper divisors (3473773).

66001307 is a wasteful number, since it uses less digits than its factorization.

66001307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473772.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 66001307 is about 8124.1188445271. The cubic root of 66001307 is about 404.1266696712.

The spelling of 66001307 in words is "sixty-six million, one thousand, three hundred seven".