622665227 has 2 divisors, whose sum is σ = 622665228. Its totient is φ = 622665226.

The previous prime is 622665221. The next prime is 622665257. The reversal of 622665227 is 722566226.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 622665227 - 2¹² = 622661131 is a prime.

It is not a weakly prime, because it can be changed into another prime (622665221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311332613 + 311332614.

It is an arithmetic number, because the mean of its divisors is an integer number (311332614).

Almost surely, 2^622665227 is an apocalyptic number.

622665227 is a deficient number, since it is larger than the sum of its proper divisors (1).

622665227 is an equidigital number, since it uses as much as digits as its factorization.

622665227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 622665227 is about 24953.2608490353. The cubic root of 622665227 is about 853.9220033632.

Subtracting 622665227 from its reverse (722566226), we obtain a palindrome (99900999).

The spelling of 622665227 in words is "six hundred twenty-two million, six hundred sixty-five thousand, two hundred twenty-seven".