66013307 has 2 divisors, whose sum is σ = 66013308. Its totient is φ = 66013306.

The previous prime is 66013301. The next prime is 66013331. The reversal of 66013307 is 70331066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66013307 - 2¹⁸ = 65751163 is a prime.

It is not a weakly prime, because it can be changed into another prime (66013301) 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 as a sum of consecutive naturals, namely, 33006653 + 33006654.

It is an arithmetic number, because the mean of its divisors is an integer number (33006654).

Almost surely, 2^66013307 is an apocalyptic number.

66013307 is a deficient number, since it is larger than the sum of its proper divisors (1).

66013307 is an equidigital number, since it uses as much as digits as its factorization.

66013307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 66013307 is about 8124.8573525940. The cubic root of 66013307 is about 404.1511602275.

The spelling of 66013307 in words is "sixty-six million, thirteen thousand, three hundred seven".