66141653 has 2 divisors, whose sum is σ = 66141654. Its totient is φ = 66141652.

The previous prime is 66141637. The next prime is 66141659. The reversal of 66141653 is 35614166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59876644 + 6265009 = 7738^2 + 2503^2 .

It is a cyclic number.

It is not a de Polignac number, because 66141653 - 2⁴ = 66141637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66141659) 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, 33070826 + 33070827.

It is an arithmetic number, because the mean of its divisors is an integer number (33070827).

Almost surely, 2^66141653 is an apocalyptic number.

It is an amenable number.

66141653 is a deficient number, since it is larger than the sum of its proper divisors (1).

66141653 is an equidigital number, since it uses as much as digits as its factorization.

66141653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 66141653 is about 8132.7518712918. The cubic root of 66141653 is about 404.4129135349.

The spelling of 66141653 in words is "sixty-six million, one hundred forty-one thousand, six hundred fifty-three".