66450713 has 12 divisors (see below), whose sum is σ = 78235920. Its totient is φ = 56268072.

The previous prime is 66450679. The next prime is 66450719. The reversal of 66450713 is 31705466.

It is not a de Polignac number, because 66450713 - 2⁶ = 66450649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66450713.

It is not an unprimeable number, because it can be changed into a prime (66450719) 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 11 ways as a sum of consecutive naturals, for example, 4103 + ... + 12236.

It is an arithmetic number, because the mean of its divisors is an integer number (6519660).

Almost surely, 2^66450713 is an apocalyptic number.

It is an amenable number.

66450713 is a deficient number, since it is larger than the sum of its proper divisors (11785207).

66450713 is a wasteful number, since it uses less digits than its factorization.

66450713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16436 (or 16429 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66450713 is about 8151.7306751389. The cubic root of 66450713 is about 405.0418348290.

The spelling of 66450713 in words is "sixty-six million, four hundred fifty thousand, seven hundred thirteen".