622747397 has 2 divisors, whose sum is σ = 622747398. Its totient is φ = 622747396.

The previous prime is 622747393. The next prime is 622747453. The reversal of 622747397 is 793747226.

622747397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529644196 + 93103201 = 23014^2 + 9649^2 .

It is a cyclic number.

It is not a de Polignac number, because 622747397 - 2² = 622747393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622747393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311373698 + 311373699.

It is an arithmetic number, because the mean of its divisors is an integer number (311373699).

Almost surely, 2^622747397 is an apocalyptic number.

It is an amenable number.

622747397 is a deficient number, since it is larger than the sum of its proper divisors (1).

622747397 is an equidigital number, since it uses as much as digits as its factorization.

622747397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 47.

The square root of 622747397 is about 24954.9072729193. The cubic root of 622747397 is about 853.9595643092.

The spelling of 622747397 in words is "six hundred twenty-two million, seven hundred forty-seven thousand, three hundred ninety-seven".