66911753 has 2 divisors, whose sum is σ = 66911754. Its totient is φ = 66911752.

The previous prime is 66911737. The next prime is 66911771. The reversal of 66911753 is 35711966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61653904 + 5257849 = 7852^2 + 2293^2 .

It is a cyclic number.

It is not a de Polignac number, because 66911753 - 2⁴ = 66911737 is a prime.

It is a Chen prime.

It is equal to p_3946862 and since 66911753 and 3946862 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (66911783) 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, 33455876 + 33455877.

It is an arithmetic number, because the mean of its divisors is an integer number (33455877).

Almost surely, 2^66911753 is an apocalyptic number.

It is an amenable number.

66911753 is a deficient number, since it is larger than the sum of its proper divisors (1).

66911753 is an equidigital number, since it uses as much as digits as its factorization.

66911753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 66911753 is about 8179.9604522271. The cubic root of 66911753 is about 405.9764135715.

The spelling of 66911753 in words is "sixty-six million, nine hundred eleven thousand, seven hundred fifty-three".