23669543 has 2 divisors, whose sum is σ = 23669544. Its totient is φ = 23669542.

The previous prime is 23669533. The next prime is 23669609. The reversal of 23669543 is 34596632.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23669543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23669497 and 23669506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23669533) 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, 11834771 + 11834772.

It is an arithmetic number, because the mean of its divisors is an integer number (11834772).

Almost surely, 2^23669543 is an apocalyptic number.

23669543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23669543 is an equidigital number, since it uses as much as digits as its factorization.

23669543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 38.

The square root of 23669543 is about 4865.1354554627. The cubic root of 23669543 is about 287.1198979428.

The spelling of 23669543 in words is "twenty-three million, six hundred sixty-nine thousand, five hundred forty-three".