11996811 has 6 divisors (see below), whose sum is σ = 17328740. Its totient is φ = 7997868.

The previous prime is 11996791. The next prime is 11996821. The reversal of 11996811 is 11869911.

It is not a de Polignac number, because 11996811 - 2¹⁰ = 11995787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11996821) 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, 666481 + ... + 666498.

Almost surely, 2^11996811 is an apocalyptic number.

11996811 is a deficient number, since it is larger than the sum of its proper divisors (5331929).

11996811 is a wasteful number, since it uses less digits than its factorization.

11996811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332985 (or 1332982 counting only the distinct ones).

The product of its digits is 3888, while the sum is 36.

The square root of 11996811 is about 3463.6412920509. The cubic root of 11996811 is about 228.9225661932.

The spelling of 11996811 in words is "eleven million, nine hundred ninety-six thousand, eight hundred eleven".