11785817 has 2 divisors, whose sum is σ = 11785818. Its totient is φ = 11785816.

The previous prime is 11785799. The next prime is 11785831. The reversal of 11785817 is 71858711.

11785817 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9665881 + 2119936 = 3109^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 11785817 - 2¹⁶ = 11720281 is a prime.

It is not a weakly prime, because it can be changed into another prime (11785847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5892908 + 5892909.

It is an arithmetic number, because the mean of its divisors is an integer number (5892909).

Almost surely, 2^11785817 is an apocalyptic number.

It is an amenable number.

11785817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11785817 is an equidigital number, since it uses as much as digits as its factorization.

11785817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 38.

The square root of 11785817 is about 3433.0477712959. The cubic root of 11785817 is about 227.5725614854.

The spelling of 11785817 in words is "eleven million, seven hundred eighty-five thousand, eight hundred seventeen".