6720227 has 2 divisors, whose sum is σ = 6720228. Its totient is φ = 6720226.

The previous prime is 6720191. The next prime is 6720229. The reversal of 6720227 is 7220276.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6720227 is a prime.

It is a super-2 number, since 2×6720227² = 90322901863058, which contains 22 as substring.

Together with 6720229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6720196 and 6720205.

It is not a weakly prime, because it can be changed into another prime (6720229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360113 + 3360114.

It is an arithmetic number, because the mean of its divisors is an integer number (3360114).

Almost surely, 2^6720227 is an apocalyptic number.

6720227 is a deficient number, since it is larger than the sum of its proper divisors (1).

6720227 is an equidigital number, since it uses as much as digits as its factorization.

6720227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 6720227 is about 2592.3400625690. The cubic root of 6720227 is about 188.7098840231.

The spelling of 6720227 in words is "six million, seven hundred twenty thousand, two hundred twenty-seven".