66134713 has 2 divisors, whose sum is σ = 66134714. Its totient is φ = 66134712.

The previous prime is 66134711. The next prime is 66134737. The reversal of 66134713 is 31743166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 1926544 = 8013^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 66134713 - 2¹ = 66134711 is a prime.

Together with 66134711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66134711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33067356 + 33067357.

It is an arithmetic number, because the mean of its divisors is an integer number (33067357).

Almost surely, 2^66134713 is an apocalyptic number.

It is an amenable number.

66134713 is a deficient number, since it is larger than the sum of its proper divisors (1).

66134713 is an equidigital number, since it uses as much as digits as its factorization.

66134713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 66134713 is about 8132.3251902516. The cubic root of 66134713 is about 404.3987685210.

Adding to 66134713 its reverse (31743166), we get a palindrome (97877879).

The spelling of 66134713 in words is "sixty-six million, one hundred thirty-four thousand, seven hundred thirteen".