2206647 has 6 divisors (see below), whose sum is σ = 3187392. Its totient is φ = 1471092.

The previous prime is 2206627. The next prime is 2206649. The reversal of 2206647 is 7466022.

It is not a de Polignac number, because 2206647 - 2¹⁵ = 2173879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2206647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122583 + ... + 122600.

It is an arithmetic number, because the mean of its divisors is an integer number (531232).

2^2206647 is an apocalyptic number.

2206647 is a deficient number, since it is larger than the sum of its proper divisors (980745).

2206647 is a wasteful number, since it uses less digits than its factorization.

2206647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245189 (or 245186 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 2206647 is about 1485.4787107192. The cubic root of 2206647 is about 130.1899983115.

The spelling of 2206647 in words is "two million, two hundred six thousand, six hundred forty-seven".