11706021 has 6 divisors (see below), whose sum is σ = 16908710. Its totient is φ = 7804008.

The previous prime is 11706017. The next prime is 11706043. The reversal of 11706021 is 12060711.

It can be written as a sum of positive squares in only one way, i.e., 11655396 + 50625 = 3414^2 + 225^2 .

It is not a de Polignac number, because 11706021 - 2² = 11706017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11705985 and 11706003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11706091) 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 in 5 ways as a sum of consecutive naturals, for example, 650326 + ... + 650343.

Almost surely, 2^11706021 is an apocalyptic number.

It is an amenable number.

11706021 is a deficient number, since it is larger than the sum of its proper divisors (5202689).

11706021 is a wasteful number, since it uses less digits than its factorization.

11706021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300675 (or 1300672 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 11706021 is about 3421.4062898171. The cubic root of 11706021 is about 227.0578038541.

Adding to 11706021 its reverse (12060711), we get a palindrome (23766732).

The spelling of 11706021 in words is "eleven million, seven hundred six thousand, twenty-one".