2066561206 has 8 divisors (see below), whose sum is σ = 3118404240. Its totient is φ = 1027093128.

The previous prime is 2066561197. The next prime is 2066561207. The reversal of 2066561206 is 6021656602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066561207) 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, 3093321 + ... + 3093988.

It is an arithmetic number, because the mean of its divisors is an integer number (389800530).

Almost surely, 2^2066561206 is an apocalyptic number.

2066561206 is a deficient number, since it is larger than the sum of its proper divisors (1051843034).

2066561206 is a wasteful number, since it uses less digits than its factorization.

2066561206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187478.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2066561206 is about 45459.4457291331. The cubic root of 2066561206 is about 1273.7457779765.

The spelling of 2066561206 in words is "two billion, sixty-six million, five hundred sixty-one thousand, two hundred six".