6221947 has 4 divisors (see below), whose sum is σ = 6236560. Its totient is φ = 6207336.

The previous prime is 6221933. The next prime is 6221951. The reversal of 6221947 is 7491226.

6221947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7491226 = 2 ⋅3745613.

It is a cyclic number.

It is not a de Polignac number, because 6221947 - 2⁷ = 6221819 is a prime.

It is a Duffinian number.

6221947 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221927) 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, 6648 + ... + 7525.

It is an arithmetic number, because the mean of its divisors is an integer number (1559140).

Almost surely, 2^6221947 is an apocalyptic number.

6221947 is a deficient number, since it is larger than the sum of its proper divisors (14613).

6221947 is a wasteful number, since it uses less digits than its factorization.

6221947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14612.

The product of its digits is 6048, while the sum is 31.

The square root of 6221947 is about 2494.3830900646. The cubic root of 6221947 is about 183.9255665381.

The spelling of 6221947 in words is "six million, two hundred twenty-one thousand, nine hundred forty-seven".