622397 has 2 divisors, whose sum is σ = 622398. Its totient is φ = 622396.

The previous prime is 622367. The next prime is 622399. The reversal of 622397 is 793226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502681 + 119716 = 709^2 + 346^2 .

It is a cyclic number.

It is not a de Polignac number, because 622397 - 2⁶ = 622333 is a prime.

Together with 622399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311198 + 311199.

It is an arithmetic number, because the mean of its divisors is an integer number (311199).

2⁶²²³⁹⁷ is an apocalyptic number.

It is an amenable number.

622397 is a deficient number, since it is larger than the sum of its proper divisors (1).

622397 is an equidigital number, since it uses as much as digits as its factorization.

622397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 622397 is about 788.9214156049. The cubic root of 622397 is about 85.3799370406.

The spelling of 622397 in words is "six hundred twenty-two thousand, three hundred ninety-seven".