6221147 has 2 divisors, whose sum is σ = 6221148. Its totient is φ = 6221146.

The previous prime is 6221123. The next prime is 6221153. The reversal of 6221147 is 7411226.

6221147 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6221147 - 2¹² = 6217051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6221107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110573 + 3110574.

It is an arithmetic number, because the mean of its divisors is an integer number (3110574).

Almost surely, 2^6221147 is an apocalyptic number.

6221147 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221147 is an equidigital number, since it uses as much as digits as its factorization.

6221147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 6221147 is about 2494.2227246178. Note that the first 3 decimals coincide. The cubic root of 6221147 is about 183.9176833273.

The spelling of 6221147 in words is "six million, two hundred twenty-one thousand, one hundred forty-seven".