8420227 has 4 divisors (see below), whose sum is σ = 8486656. Its totient is φ = 8353800.

The previous prime is 8420221. The next prime is 8420233. The reversal of 8420227 is 7220248.

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

It is an interprime number because it is at equal distance from previous prime (8420221) and next prime (8420233).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8420227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8420221) 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, 33024 + ... + 33277.

It is an arithmetic number, because the mean of its divisors is an integer number (2121664).

Almost surely, 2^8420227 is an apocalyptic number.

8420227 is a deficient number, since it is larger than the sum of its proper divisors (66429).

8420227 is a wasteful number, since it uses less digits than its factorization.

8420227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66428.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 8420227 is about 2901.7627401288. The cubic root of 8420227 is about 203.4423044548.

The spelling of 8420227 in words is "eight million, four hundred twenty thousand, two hundred twenty-seven".