23643427 has 2 divisors, whose sum is σ = 23643428. Its totient is φ = 23643426.

The previous prime is 23643419. The next prime is 23643443. The reversal of 23643427 is 72434632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23643427 - 2³ = 23643419 is a prime.

It is not a weakly prime, because it can be changed into another prime (23643227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11821713 + 11821714.

It is an arithmetic number, because the mean of its divisors is an integer number (11821714).

Almost surely, 2^23643427 is an apocalyptic number.

23643427 is a deficient number, since it is larger than the sum of its proper divisors (1).

23643427 is an equidigital number, since it uses as much as digits as its factorization.

23643427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 31.

The square root of 23643427 is about 4862.4507195446. The cubic root of 23643427 is about 287.0142603201.

The spelling of 23643427 in words is "twenty-three million, six hundred forty-three thousand, four hundred twenty-seven".