66714291 has 24 divisors (see below), whose sum is σ = 112479744. Its totient is φ = 37309680.

The previous prime is 66714289. The next prime is 66714299. The reversal of 66714291 is 19241766.

It is not a de Polignac number, because 66714291 - 2¹ = 66714289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66714299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8305 + ... + 14226.

It is an arithmetic number, because the mean of its divisors is an integer number (4686656).

Almost surely, 2^66714291 is an apocalyptic number.

66714291 is a deficient number, since it is larger than the sum of its proper divisors (45765453).

66714291 is a wasteful number, since it uses less digits than its factorization.

66714291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22591 (or 22588 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 66714291 is about 8167.8816715229. The cubic root of 66714291 is about 405.5766636609.

The spelling of 66714291 in words is "sixty-six million, seven hundred fourteen thousand, two hundred ninety-one".