23782691 has 2 divisors, whose sum is σ = 23782692. Its totient is φ = 23782690.

The previous prime is 23782631. The next prime is 23782729. The reversal of 23782691 is 19628732.

It is an a-pointer prime, because the next prime (23782729) can be obtained adding 23782691 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23782691 - 2¹⁸ = 23520547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23782631) 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, 11891345 + 11891346.

It is an arithmetic number, because the mean of its divisors is an integer number (11891346).

Almost surely, 2^23782691 is an apocalyptic number.

23782691 is a deficient number, since it is larger than the sum of its proper divisors (1).

23782691 is an equidigital number, since it uses as much as digits as its factorization.

23782691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 23782691 is about 4876.7500448557. The cubic root of 23782691 is about 287.5766792320.

It can be divided in two parts, 237 and 82691, that added together give a palindrome (82928).

The spelling of 23782691 in words is "twenty-three million, seven hundred eighty-two thousand, six hundred ninety-one".