6622997 has 2 divisors, whose sum is σ = 6622998. Its totient is φ = 6622996.

The previous prime is 6622981. The next prime is 6622999. The reversal of 6622997 is 7992266.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3556996 + 3066001 = 1886^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 6622997 - 2⁴ = 6622981 is a prime.

Together with 6622999, 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 (6622999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311498 + 3311499.

It is an arithmetic number, because the mean of its divisors is an integer number (3311499).

Almost surely, 2^6622997 is an apocalyptic number.

It is an amenable number.

6622997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6622997 is an equidigital number, since it uses as much as digits as its factorization.

6622997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 6622997 is about 2573.5184087160. The cubic root of 6622997 is about 187.7953579029.

The spelling of 6622997 in words is "six million, six hundred twenty-two thousand, nine hundred ninety-seven".