23645047 has 2 divisors, whose sum is σ = 23645048. Its totient is φ = 23645046.

The previous prime is 23645023. The next prime is 23645051. The reversal of 23645047 is 74054632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23645047 - 2¹⁵ = 23612279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23645057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11822523 + 11822524.

It is an arithmetic number, because the mean of its divisors is an integer number (11822524).

Almost surely, 2^23645047 is an apocalyptic number.

23645047 is a deficient number, since it is larger than the sum of its proper divisors (1).

23645047 is an equidigital number, since it uses as much as digits as its factorization.

23645047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 23645047 is about 4862.6172993564. The cubic root of 23645047 is about 287.0208153834.

Adding to 23645047 its reverse (74054632), we get a palindrome (97699679).

The spelling of 23645047 in words is "twenty-three million, six hundred forty-five thousand, forty-seven".