6621227 has 4 divisors (see below), whose sum is σ = 6705120. Its totient is φ = 6537336.

The previous prime is 6621191. The next prime is 6621233. The reversal of 6621227 is 7221266.

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

It is a cyclic number.

It is not a de Polignac number, because 6621227 - 2⁶ = 6621163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6621196 and 6621205.

It is not an unprimeable number, because it can be changed into a prime (6621287) 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, 41828 + ... + 41985.

It is an arithmetic number, because the mean of its divisors is an integer number (1676280).

Almost surely, 2^6621227 is an apocalyptic number.

6621227 is a deficient number, since it is larger than the sum of its proper divisors (83893).

6621227 is an equidigital number, since it uses as much as digits as its factorization.

6621227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83892.

The product of its digits is 2016, while the sum is 26.

The square root of 6621227 is about 2573.1744985523. The cubic root of 6621227 is about 187.7786269376.

The spelling of 6621227 in words is "six million, six hundred twenty-one thousand, two hundred twenty-seven".