11782691 has 2 divisors, whose sum is σ = 11782692. Its totient is φ = 11782690.

The previous prime is 11782669. The next prime is 11782709. The reversal of 11782691 is 19628711.

11782691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19628711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11782691 - 2¹⁰ = 11781667 is a prime.

It is not a weakly prime, because it can be changed into another prime (11782291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5891345 + 5891346.

It is an arithmetic number, because the mean of its divisors is an integer number (5891346).

Almost surely, 2^11782691 is an apocalyptic number.

11782691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11782691 is an equidigital number, since it uses as much as digits as its factorization.

11782691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 35.

The square root of 11782691 is about 3432.5924605173. The cubic root of 11782691 is about 227.5524397088.

The spelling of 11782691 in words is "eleven million, seven hundred eighty-two thousand, six hundred ninety-one".