6366614221 has 16 divisors (see below), whose sum is σ = 7316951040. Its totient is φ = 5478703920.

The previous prime is 6366614147. The next prime is 6366614237. The reversal of 6366614221 is 1224166636.

It is a cyclic number.

It is not a de Polignac number, because 6366614221 - 2²⁷ = 6232396493 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 (6366614251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256276 + ... + 280018.

It is an arithmetic number, because the mean of its divisors is an integer number (457309440).

Almost surely, 2^6366614221 is an apocalyptic number.

It is an amenable number.

6366614221 is a deficient number, since it is larger than the sum of its proper divisors (950336819).

6366614221 is a wasteful number, since it uses less digits than its factorization.

6366614221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25056.

The product of its digits is 62208, while the sum is 37.

The square root of 6366614221 is about 79791.0660475219. The cubic root of 6366614221 is about 1853.4015063823.

The spelling of 6366614221 in words is "six billion, three hundred sixty-six million, six hundred fourteen thousand, two hundred twenty-one".