66316829 has 2 divisors, whose sum is σ = 66316830. Its totient is φ = 66316828.

The previous prime is 66316819. The next prime is 66316841. The reversal of 66316829 is 92861366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 6996025 = 7702^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 66316829 - 2⁸ = 66316573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66316819) 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 as a sum of consecutive naturals, namely, 33158414 + 33158415.

It is an arithmetic number, because the mean of its divisors is an integer number (33158415).

Almost surely, 2^66316829 is an apocalyptic number.

It is an amenable number.

66316829 is a deficient number, since it is larger than the sum of its proper divisors (1).

66316829 is an equidigital number, since it uses as much as digits as its factorization.

66316829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 66316829 is about 8143.5145361201. The cubic root of 66316829 is about 404.7696276593.

The spelling of 66316829 in words is "sixty-six million, three hundred sixteen thousand, eight hundred twenty-nine".