66000029 has 2 divisors, whose sum is σ = 66000030. Its totient is φ = 66000028.

The previous prime is 66000013. The next prime is 66000043. The reversal of 66000029 is 92000066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65983129 + 16900 = 8123^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 66000029 - 2⁴ = 66000013 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65999968 and 66000013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66000049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000014 + 33000015.

It is an arithmetic number, because the mean of its divisors is an integer number (33000015).

Almost surely, 2^66000029 is an apocalyptic number.

It is an amenable number.

66000029 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000029 is an equidigital number, since it uses as much as digits as its factorization.

66000029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 66000029 is about 8124.0401894624. The cubic root of 66000029 is about 404.1240612521.

The spelling of 66000029 in words is "sixty-six million, twenty-nine", and thus it is an aban number and an uban number.