622849313 has 2 divisors, whose sum is σ = 622849314. Its totient is φ = 622849312.

The previous prime is 622849291. The next prime is 622849321. The reversal of 622849313 is 313948226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622602304 + 247009 = 24952^2 + 497^2 .

It is a cyclic number.

It is not a de Polignac number, because 622849313 - 2²⁰ = 621800737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (622842313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311424656 + 311424657.

It is an arithmetic number, because the mean of its divisors is an integer number (311424657).

Almost surely, 2^622849313 is an apocalyptic number.

It is an amenable number.

622849313 is a deficient number, since it is larger than the sum of its proper divisors (1).

622849313 is an equidigital number, since it uses as much as digits as its factorization.

622849313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 622849313 is about 24956.9491925596. The cubic root of 622849313 is about 854.0061468112.

The spelling of 622849313 in words is "six hundred twenty-two million, eight hundred forty-nine thousand, three hundred thirteen".