22588649 has 2 divisors, whose sum is σ = 22588650. Its totient is φ = 22588648.

The previous prime is 22588637. The next prime is 22588667. The reversal of 22588649 is 94688522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 310249 = 4720^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 22588649 - 2⁴ = 22588633 is a prime.

It is not a weakly prime, because it can be changed into another prime (22588669) 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, 11294324 + 11294325.

It is an arithmetic number, because the mean of its divisors is an integer number (11294325).

Almost surely, 2^22588649 is an apocalyptic number.

It is an amenable number.

22588649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22588649 is an equidigital number, since it uses as much as digits as its factorization.

22588649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 44.

The square root of 22588649 is about 4752.7517292617. The cubic root of 22588649 is about 282.6810868091.

The spelling of 22588649 in words is "twenty-two million, five hundred eighty-eight thousand, six hundred forty-nine".