66943053 has 6 divisors (see below), whose sum is σ = 96695534. Its totient is φ = 44628696.

The previous prime is 66943033. The next prime is 66943057. The reversal of 66943053 is 35034966.

It can be written as a sum of positive squares in only one way, i.e., 36505764 + 30437289 = 6042^2 + 5517^2 .

It is not a de Polignac number, because 66943053 - 2⁵ = 66943021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66942999 and 66943017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66943057) 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 in 5 ways as a sum of consecutive naturals, for example, 3719050 + ... + 3719067.

Almost surely, 2^66943053 is an apocalyptic number.

It is an amenable number.

66943053 is a deficient number, since it is larger than the sum of its proper divisors (29752481).

66943053 is a wasteful number, since it uses less digits than its factorization.

66943053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438123 (or 7438120 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 66943053 is about 8181.8734407225. The cubic root of 66943053 is about 406.0397062932.

The spelling of 66943053 in words is "sixty-six million, nine hundred forty-three thousand, fifty-three".