2066905829 has 8 divisors (see below), whose sum is σ = 2096835480. Its totient is φ = 2037125376.

The previous prime is 2066905807. The next prime is 2066905831. The reversal of 2066905829 is 9285096602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 449016100 + 1617889729 = 21190^2 + 40223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2066905829 - 2⁸ = 2066905573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066905859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9242 + ... + 64955.

It is an arithmetic number, because the mean of its divisors is an integer number (262104435).

Almost surely, 2^2066905829 is an apocalyptic number.

It is an amenable number.

2066905829 is a deficient number, since it is larger than the sum of its proper divisors (29929651).

2066905829 is an equidigital number, since it uses as much as digits as its factorization.

2066905829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74599.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 2066905829 is about 45463.2360154884. The cubic root of 2066905829 is about 1273.8165779915.

The spelling of 2066905829 in words is "two billion, sixty-six million, nine hundred five thousand, eight hundred twenty-nine".