66066029 has 4 divisors (see below), whose sum is σ = 69952284. Its totient is φ = 62179776.

The previous prime is 66065977. The next prime is 66066043. The reversal of 66066029 is 92066066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92066066 = 2 ⋅46033033.

It can be written as a sum of positive squares in 2 ways, for example, as 57078025 + 8988004 = 7555^2 + 2998^2 .

It is a cyclic number.

It is not a de Polignac number, because 66066029 - 2⁸ = 66065773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66066029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943102 + ... + 1943135.

It is an arithmetic number, because the mean of its divisors is an integer number (17488071).

Almost surely, 2^66066029 is an apocalyptic number.

It is an amenable number.

66066029 is a deficient number, since it is larger than the sum of its proper divisors (3886255).

66066029 is a wasteful number, since it uses less digits than its factorization.

66066029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886254.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 66066029 is about 8128.1011927756. The cubic root of 66066029 is about 404.2587243356.

The spelling of 66066029 in words is "sixty-six million, sixty-six thousand, twenty-nine".