66226713 has 32 divisors (see below), whose sum is σ = 109154304. Its totient is φ = 34851072.

The previous prime is 66226711. The next prime is 66226717. The reversal of 66226713 is 31762266.

66226713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66226713 - 2¹ = 66226711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66226711) 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 31 ways as a sum of consecutive naturals, for example, 14806 + ... + 18752.

It is an arithmetic number, because the mean of its divisors is an integer number (3411072).

Almost surely, 2^66226713 is an apocalyptic number.

It is an amenable number.

66226713 is a deficient number, since it is larger than the sum of its proper divisors (42927591).

66226713 is a wasteful number, since it uses less digits than its factorization.

66226713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

The product of its digits is 18144, while the sum is 33.

The square root of 66226713 is about 8137.9796632825. The cubic root of 66226713 is about 404.5862013458.

Adding to 66226713 its reverse (31762266), we get a palindrome (97988979).

The spelling of 66226713 in words is "sixty-six million, two hundred twenty-six thousand, seven hundred thirteen".