2206147 has 4 divisors (see below), whose sum is σ = 2322280. Its totient is φ = 2090016.

The previous prime is 2206123. The next prime is 2206151. The reversal of 2206147 is 7416022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2206147 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 (2206247) 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, 58038 + ... + 58075.

It is an arithmetic number, because the mean of its divisors is an integer number (580570).

2^2206147 is an apocalyptic number.

2206147 is a deficient number, since it is larger than the sum of its proper divisors (116133).

2206147 is a wasteful number, since it uses less digits than its factorization.

2206147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116132.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2206147 is about 1485.3104052689. The cubic root of 2206147 is about 130.1801643996.

The spelling of 2206147 in words is "two million, two hundred six thousand, one hundred forty-seven".