622774213 has 2 divisors, whose sum is σ = 622774214. Its totient is φ = 622774212.

The previous prime is 622774211. The next prime is 622774219. The reversal of 622774213 is 312477226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573746209 + 49028004 = 23953^2 + 7002^2 .

It is a cyclic number.

It is not a de Polignac number, because 622774213 - 2¹ = 622774211 is a prime.

Together with 622774211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622774211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311387106 + 311387107.

It is an arithmetic number, because the mean of its divisors is an integer number (311387107).

Almost surely, 2^622774213 is an apocalyptic number.

It is an amenable number.

622774213 is a deficient number, since it is larger than the sum of its proper divisors (1).

622774213 is an equidigital number, since it uses as much as digits as its factorization.

622774213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 622774213 is about 24955.4445562486. Note that the first 3 decimals coincide. The cubic root of 622774213 is about 853.9718215267.

The spelling of 622774213 in words is "six hundred twenty-two million, seven hundred seventy-four thousand, two hundred thirteen".