23661047 has 2 divisors, whose sum is σ = 23661048. Its totient is φ = 23661046.

The previous prime is 23661041. The next prime is 23661067. The reversal of 23661047 is 74016632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23661047 - 2⁴ = 23661031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23661041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11830523 + 11830524.

It is an arithmetic number, because the mean of its divisors is an integer number (11830524).

Almost surely, 2^23661047 is an apocalyptic number.

23661047 is a deficient number, since it is larger than the sum of its proper divisors (1).

23661047 is an equidigital number, since it uses as much as digits as its factorization.

23661047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 23661047 is about 4864.2622256618. The cubic root of 23661047 is about 287.0855406737.

Adding to 23661047 its reverse (74016632), we get a palindrome (97677679).

The spelling of 23661047 in words is "twenty-three million, six hundred sixty-one thousand, forty-seven".