23456681 has 2 divisors, whose sum is σ = 23456682. Its totient is φ = 23456680.

The previous prime is 23456669. The next prime is 23456683. The reversal of 23456681 is 18665432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 570025 = 4784^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 23456681 - 2¹⁰ = 23455657 is a prime.

It is a super-2 number, since 2×23456681² = 1100431767071522, which contains 22 as substring.

Together with 23456683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23456683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11728340 + 11728341.

It is an arithmetic number, because the mean of its divisors is an integer number (11728341).

Almost surely, 2^23456681 is an apocalyptic number.

It is an amenable number.

23456681 is a deficient number, since it is larger than the sum of its proper divisors (1).

23456681 is an equidigital number, since it uses as much as digits as its factorization.

23456681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 23456681 is about 4843.2097827784. The cubic root of 23456681 is about 286.2566078450.

The spelling of 23456681 in words is "twenty-three million, four hundred fifty-six thousand, six hundred eighty-one".