66336929 has 4 divisors (see below), whose sum is σ = 66353220. Its totient is φ = 66320640.

The previous prime is 66336889. The next prime is 66336943. The reversal of 66336929 is 92963366.

66336929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92963366 = 2 ⋅46481683.

It can be written as a sum of positive squares in 2 ways, for example, as 12285025 + 54051904 = 3505^2 + 7352^2 .

It is a cyclic number.

It is not a de Polignac number, because 66336929 - 2¹⁶ = 66271393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66336929.

It is not an unprimeable number, because it can be changed into a prime (66336979) 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 in 3 ways as a sum of consecutive naturals, for example, 3977 + ... + 12185.

It is an arithmetic number, because the mean of its divisors is an integer number (16588305).

Almost surely, 2^66336929 is an apocalyptic number.

It is an amenable number.

66336929 is a deficient number, since it is larger than the sum of its proper divisors (16291).

66336929 is an equidigital number, since it uses as much as digits as its factorization.

66336929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290.

The product of its digits is 314928, while the sum is 44.

The square root of 66336929 is about 8144.7485535159. The cubic root of 66336929 is about 404.8105174697.

The spelling of 66336929 in words is "sixty-six million, three hundred thirty-six thousand, nine hundred twenty-nine".