23966513 has 2 divisors, whose sum is σ = 23966514. Its totient is φ = 23966512.

The previous prime is 23966497. The next prime is 23966531. The reversal of 23966513 is 31566932.

Together with next prime (23966531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19918369 + 4048144 = 4463^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 23966513 - 2⁴ = 23966497 is a prime.

It is not a weakly prime, because it can be changed into another prime (23966533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11983256 + 11983257.

It is an arithmetic number, because the mean of its divisors is an integer number (11983257).

Almost surely, 2^23966513 is an apocalyptic number.

It is an amenable number.

23966513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23966513 is an equidigital number, since it uses as much as digits as its factorization.

23966513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 35.

The square root of 23966513 is about 4895.5605399178. The cubic root of 23966513 is about 288.3156943631.

The spelling of 23966513 in words is "twenty-three million, nine hundred sixty-six thousand, five hundred thirteen".