22565623 has 2 divisors, whose sum is σ = 22565624. Its totient is φ = 22565622.

The previous prime is 22565617. The next prime is 22565629. The reversal of 22565623 is 32656522.

It is a balanced prime because it is at equal distance from previous prime (22565617) and next prime (22565629).

It is a cyclic number.

It is not a de Polignac number, because 22565623 - 2⁹ = 22565111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22565629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282811 + 11282812.

It is an arithmetic number, because the mean of its divisors is an integer number (11282812).

Almost surely, 2^22565623 is an apocalyptic number.

22565623 is a deficient number, since it is larger than the sum of its proper divisors (1).

22565623 is an equidigital number, since it uses as much as digits as its factorization.

22565623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 22565623 is about 4750.3287254673. The cubic root of 22565623 is about 282.5850027444.

The spelling of 22565623 in words is "twenty-two million, five hundred sixty-five thousand, six hundred twenty-three".