66532853 has 2 divisors, whose sum is σ = 66532854. Its totient is φ = 66532852.

The previous prime is 66532847. The next prime is 66532867. The reversal of 66532853 is 35823566.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66227044 + 305809 = 8138^2 + 553^2 .

It is a cyclic number.

It is not a de Polignac number, because 66532853 - 2⁸ = 66532597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66538853) 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, 33266426 + 33266427.

It is an arithmetic number, because the mean of its divisors is an integer number (33266427).

Almost surely, 2^66532853 is an apocalyptic number.

It is an amenable number.

66532853 is a deficient number, since it is larger than the sum of its proper divisors (1).

66532853 is an equidigital number, since it uses as much as digits as its factorization.

66532853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 38.

The square root of 66532853 is about 8156.7673130965. The cubic root of 66532853 is about 405.2086574046.

The spelling of 66532853 in words is "sixty-six million, five hundred thirty-two thousand, eight hundred fifty-three".