2206866647 has 4 divisors (see below), whose sum is σ = 2227113240. Its totient is φ = 2186620056.

The previous prime is 2206866637. The next prime is 2206866653. The reversal of 2206866647 is 7466686022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2206866647 - 2⁸ = 2206866391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206866637) 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, 10123133 + ... + 10123350.

It is an arithmetic number, because the mean of its divisors is an integer number (556778310).

Almost surely, 2^2206866647 is an apocalyptic number.

2206866647 is a deficient number, since it is larger than the sum of its proper divisors (20246593).

2206866647 is a wasteful number, since it uses less digits than its factorization.

2206866647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20246592.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 2206866647 is about 46977.2992731596. The cubic root of 2206866647 is about 1301.9431782033.

The spelling of 2206866647 in words is "two billion, two hundred six million, eight hundred sixty-six thousand, six hundred forty-seven".