66601351 has 2 divisors, whose sum is σ = 66601352. Its totient is φ = 66601350.

The previous prime is 66601279. The next prime is 66601357. The reversal of 66601351 is 15310666.

66601351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66601351 - 2¹³ = 66593159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66601357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33300675 + 33300676.

It is an arithmetic number, because the mean of its divisors is an integer number (33300676).

Almost surely, 2^66601351 is an apocalyptic number.

66601351 is a deficient number, since it is larger than the sum of its proper divisors (1).

66601351 is an equidigital number, since it uses as much as digits as its factorization.

66601351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 66601351 is about 8160.9650777344. The cubic root of 66601351 is about 405.3476687428.

The spelling of 66601351 in words is "sixty-six million, six hundred one thousand, three hundred fifty-one".