23786561 has 2 divisors, whose sum is σ = 23786562. Its totient is φ = 23786560.

The previous prime is 23786557. The next prime is 23786573. The reversal of 23786561 is 16568732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 118336 = 4865^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 23786561 - 2² = 23786557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23786501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11893280 + 11893281.

It is an arithmetic number, because the mean of its divisors is an integer number (11893281).

Almost surely, 2^23786561 is an apocalyptic number.

It is an amenable number.

23786561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23786561 is an equidigital number, since it uses as much as digits as its factorization.

23786561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 23786561 is about 4877.1468093548. The cubic root of 23786561 is about 287.5922768696.

The spelling of 23786561 in words is "twenty-three million, seven hundred eighty-six thousand, five hundred sixty-one".