2066211645 has 8 divisors (see below), whose sum is σ = 3305938656. Its totient is φ = 1101979536.

The previous prime is 2066211607. The next prime is 2066211649. The reversal of 2066211645 is 5461126602.

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

It is not a de Polignac number, because 2066211645 - 2¹⁷ = 2066080573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066211649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68873707 + ... + 68873736.

It is an arithmetic number, because the mean of its divisors is an integer number (413242332).

Almost surely, 2^2066211645 is an apocalyptic number.

It is an amenable number.

2066211645 is a deficient number, since it is larger than the sum of its proper divisors (1239727011).

2066211645 is a wasteful number, since it uses less digits than its factorization.

2066211645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137747451.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2066211645 is about 45455.6008100212. The cubic root of 2066211645 is about 1273.6739554477.

The spelling of 2066211645 in words is "two billion, sixty-six million, two hundred eleven thousand, six hundred forty-five".