6622309 has 2 divisors, whose sum is σ = 6622310. Its totient is φ = 6622308.

The previous prime is 6622307. The next prime is 6622339. The reversal of 6622309 is 9032266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5904900 + 717409 = 2430^2 + 847^2 .

It is a cyclic number.

It is not a de Polignac number, because 6622309 - 2¹ = 6622307 is a prime.

Together with 6622307, it forms a pair of twin primes.

It is a Chen prime.

6622309 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6622303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311154 + 3311155.

It is an arithmetic number, because the mean of its divisors is an integer number (3311155).

Almost surely, 2^6622309 is an apocalyptic number.

It is an amenable number.

6622309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6622309 is an equidigital number, since it uses as much as digits as its factorization.

6622309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 6622309 is about 2573.3847361015. The cubic root of 6622309 is about 187.7888549214.

The spelling of 6622309 in words is "six million, six hundred twenty-two thousand, three hundred nine".