11865697 has 2 divisors, whose sum is σ = 11865698. Its totient is φ = 11865696.

The previous prime is 11865691. The next prime is 11865713. The reversal of 11865697 is 79656811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8346321 + 3519376 = 2889^2 + 1876^2 .

It is a cyclic number.

It is not a de Polignac number, because 11865697 - 2¹⁵ = 11832929 is a prime.

It is not a weakly prime, because it can be changed into another prime (11865691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5932848 + 5932849.

It is an arithmetic number, because the mean of its divisors is an integer number (5932849).

Almost surely, 2^11865697 is an apocalyptic number.

It is an amenable number.

11865697 is a deficient number, since it is larger than the sum of its proper divisors (1).

11865697 is an equidigital number, since it uses as much as digits as its factorization.

11865697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 11865697 is about 3444.6621024420. The cubic root of 11865697 is about 228.0855391055.

The spelling of 11865697 in words is "eleven million, eight hundred sixty-five thousand, six hundred ninety-seven".