66871151 has 2 divisors, whose sum is σ = 66871152. Its totient is φ = 66871150.

The previous prime is 66871141. The next prime is 66871157. The reversal of 66871151 is 15117866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66871151 - 2⁶ = 66871087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66871157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33435575 + 33435576.

It is an arithmetic number, because the mean of its divisors is an integer number (33435576).

Almost surely, 2^66871151 is an apocalyptic number.

66871151 is a deficient number, since it is larger than the sum of its proper divisors (1).

66871151 is an equidigital number, since it uses as much as digits as its factorization.

66871151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 66871151 is about 8177.4782787850. The cubic root of 66871151 is about 405.8942815654.

The spelling of 66871151 in words is "sixty-six million, eight hundred seventy-one thousand, one hundred fifty-one".