66297151 has 2 divisors, whose sum is σ = 66297152. Its totient is φ = 66297150.

The previous prime is 66297073. The next prime is 66297157. The reversal of 66297151 is 15179266.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66297151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66297151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66297157) 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 as a sum of consecutive naturals, namely, 33148575 + 33148576.

It is an arithmetic number, because the mean of its divisors is an integer number (33148576).

Almost surely, 2^66297151 is an apocalyptic number.

66297151 is a deficient number, since it is larger than the sum of its proper divisors (1).

66297151 is an equidigital number, since it uses as much as digits as its factorization.

66297151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 66297151 is about 8142.3062457758. The cubic root of 66297151 is about 404.7295883269.

The spelling of 66297151 in words is "sixty-six million, two hundred ninety-seven thousand, one hundred fifty-one".