11806691 has 8 divisors (see below), whose sum is σ = 13125504. Its totient is φ = 10546560.

The previous prime is 11806681. The next prime is 11806693. The reversal of 11806691 is 19660811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11806691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11806693) 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 7 ways as a sum of consecutive naturals, for example, 14246 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (1640688).

Almost surely, 2^11806691 is an apocalyptic number.

11806691 is a deficient number, since it is larger than the sum of its proper divisors (1318813).

11806691 is a wasteful number, since it uses less digits than its factorization.

11806691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29341.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 11806691 is about 3436.0865821454. The cubic root of 11806691 is about 227.7068343983.

The spelling of 11806691 in words is "eleven million, eight hundred six thousand, six hundred ninety-one".