11806817 has 6 divisors (see below), whose sum is σ = 12977874. Its totient is φ = 10733360.

The previous prime is 11806793. The next prime is 11806819. The reversal of 11806817 is 71860811.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 3876961 = 2816^2 + 1969^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11806817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11806819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48668 + ... + 48909.

It is an arithmetic number, because the mean of its divisors is an integer number (2162979).

Almost surely, 2^11806817 is an apocalyptic number.

It is an amenable number.

11806817 is a deficient number, since it is larger than the sum of its proper divisors (1171057).

11806817 is an equidigital number, since it uses as much as digits as its factorization.

11806817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97599 (or 97588 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 11806817 is about 3436.1049169081. The cubic root of 11806817 is about 227.7076444181.

It can be divided in two parts, 1180 and 6817, that added together give a palindrome (7997).

The spelling of 11806817 in words is "eleven million, eight hundred six thousand, eight hundred seventeen".