622345643 has 2 divisors, whose sum is σ = 622345644. Its totient is φ = 622345642.

The previous prime is 622345621. The next prime is 622345649. The reversal of 622345643 is 346543226.

622345643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622345643 - 2⁸ = 622345387 is a prime.

It is a super-2 number, since 2×622345643² = 774628198722166898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (622345649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311172821 + 311172822.

It is an arithmetic number, because the mean of its divisors is an integer number (311172822).

Almost surely, 2^622345643 is an apocalyptic number.

622345643 is a deficient number, since it is larger than the sum of its proper divisors (1).

622345643 is an equidigital number, since it uses as much as digits as its factorization.

622345643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 35.

The square root of 622345643 is about 24946.8563751027. The cubic root of 622345643 is about 853.7758860492.

Adding to 622345643 its reverse (346543226), we get a palindrome (968888869).

The spelling of 622345643 in words is "six hundred twenty-two million, three hundred forty-five thousand, six hundred forty-three".