622250621 has 2 divisors, whose sum is σ = 622250622. Its totient is φ = 622250620.

The previous prime is 622250611. The next prime is 622250623. The reversal of 622250621 is 126052226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343694521 + 278556100 = 18539^2 + 16690^2 .

It is a cyclic number.

It is not a de Polignac number, because 622250621 - 2⁶ = 622250557 is a prime.

It is a Sophie Germain prime.

Together with 622250623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622250623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311125310 + 311125311.

It is an arithmetic number, because the mean of its divisors is an integer number (311125311).

Almost surely, 2^622250621 is an apocalyptic number.

It is an amenable number.

622250621 is a deficient number, since it is larger than the sum of its proper divisors (1).

622250621 is an equidigital number, since it uses as much as digits as its factorization.

622250621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 622250621 is about 24944.9518139442. The cubic root of 622250621 is about 853.7324313000.

The spelling of 622250621 in words is "six hundred twenty-two million, two hundred fifty thousand, six hundred twenty-one".