23385643 has 2 divisors, whose sum is σ = 23385644. Its totient is φ = 23385642.

The previous prime is 23385601. The next prime is 23385683. The reversal of 23385643 is 34658332.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23385643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23385599 and 23385608.

It is not a weakly prime, because it can be changed into another prime (23385683) 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, 11692821 + 11692822.

It is an arithmetic number, because the mean of its divisors is an integer number (11692822).

Almost surely, 2^23385643 is an apocalyptic number.

23385643 is a deficient number, since it is larger than the sum of its proper divisors (1).

23385643 is an equidigital number, since it uses as much as digits as its factorization.

23385643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 34.

The square root of 23385643 is about 4835.8704490505. The cubic root of 23385643 is about 285.9673418624.

The spelling of 23385643 in words is "twenty-three million, three hundred eighty-five thousand, six hundred forty-three".