23916691 has 2 divisors, whose sum is σ = 23916692. Its totient is φ = 23916690.

The previous prime is 23916661. The next prime is 23916707. The reversal of 23916691 is 19661932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23916691 - 2²³ = 15528083 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23916691.

It is not a weakly prime, because it can be changed into another prime (23916601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11958345 + 11958346.

It is an arithmetic number, because the mean of its divisors is an integer number (11958346).

Almost surely, 2^23916691 is an apocalyptic number.

23916691 is a deficient number, since it is larger than the sum of its proper divisors (1).

23916691 is an equidigital number, since it uses as much as digits as its factorization.

23916691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 23916691 is about 4890.4694048731. The cubic root of 23916691 is about 288.1157705537.

The spelling of 23916691 in words is "twenty-three million, nine hundred sixteen thousand, six hundred ninety-one".