22303649 has 2 divisors, whose sum is σ = 22303650. Its totient is φ = 22303648.

The previous prime is 22303607. The next prime is 22303651. The reversal of 22303649 is 94630322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21022225 + 1281424 = 4585^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 22303649 - 2¹² = 22299553 is a prime.

Together with 22303651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22303669) 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, 11151824 + 11151825.

It is an arithmetic number, because the mean of its divisors is an integer number (11151825).

Almost surely, 2^22303649 is an apocalyptic number.

It is an amenable number.

22303649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22303649 is an equidigital number, since it uses as much as digits as its factorization.

22303649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 22303649 is about 4722.6739248015. The cubic root of 22303649 is about 281.4871932229.

The spelling of 22303649 in words is "twenty-two million, three hundred three thousand, six hundred forty-nine".