622652213 has 2 divisors, whose sum is σ = 622652214. Its totient is φ = 622652212.

The previous prime is 622652203. The next prime is 622652221. The reversal of 622652213 is 312256226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622652209 + 4 = 24953^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 622652213 - 2¹⁰ = 622651189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622652203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311326106 + 311326107.

It is an arithmetic number, because the mean of its divisors is an integer number (311326107).

Almost surely, 2^622652213 is an apocalyptic number.

It is an amenable number.

622652213 is a deficient number, since it is larger than the sum of its proper divisors (1).

622652213 is an equidigital number, since it uses as much as digits as its factorization.

622652213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 622652213 is about 24953.0000801507. Note that the first 4 decimals coincide. The cubic root of 622652213 is about 853.9160541962.

The spelling of 622652213 in words is "six hundred twenty-two million, six hundred fifty-two thousand, two hundred thirteen".