22837649 has 2 divisors, whose sum is σ = 22837650. Its totient is φ = 22837648.

The previous prime is 22837609. The next prime is 22837651. The reversal of 22837649 is 94673822.

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., 22515025 + 322624 = 4745^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 22837649 - 2¹² = 22833553 is a prime.

Together with 22837651, 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 (22837609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11418824 + 11418825.

It is an arithmetic number, because the mean of its divisors is an integer number (11418825).

Almost surely, 2^22837649 is an apocalyptic number.

It is an amenable number.

22837649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22837649 is an equidigital number, since it uses as much as digits as its factorization.

22837649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 22837649 is about 4778.8752860898. The cubic root of 22837649 is about 283.7159801892.

The spelling of 22837649 in words is "twenty-two million, eight hundred thirty-seven thousand, six hundred forty-nine".