2066020817 has 4 divisors (see below), whose sum is σ = 2361166656. Its totient is φ = 1770874980.

The previous prime is 2066020769. The next prime is 2066020819. The reversal of 2066020817 is 7180206602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2066020817 - 2¹² = 2066016721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066020819) 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, 147572909 + ... + 147572922.

It is an arithmetic number, because the mean of its divisors is an integer number (590291664).

Almost surely, 2^2066020817 is an apocalyptic number.

It is an amenable number.

2066020817 is a deficient number, since it is larger than the sum of its proper divisors (295145839).

2066020817 is an equidigital number, since it uses as much as digits as its factorization.

2066020817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295145838.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2066020817 is about 45453.5017022891. The cubic root of 2066020817 is about 1273.6347435665.

The spelling of 2066020817 in words is "two billion, sixty-six million, twenty thousand, eight hundred seventeen".