22536649 has 2 divisors, whose sum is σ = 22536650. Its totient is φ = 22536648.

The previous prime is 22536623. The next prime is 22536667. The reversal of 22536649 is 94663522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 6215049 = 4040^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 22536649 - 2¹¹ = 22534601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22533649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268324 + 11268325.

It is an arithmetic number, because the mean of its divisors is an integer number (11268325).

Almost surely, 2^22536649 is an apocalyptic number.

It is an amenable number.

22536649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22536649 is an equidigital number, since it uses as much as digits as its factorization.

22536649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 22536649 is about 4747.2780622163. The cubic root of 22536649 is about 282.4640056471.

The spelling of 22536649 in words is "twenty-two million, five hundred thirty-six thousand, six hundred forty-nine".