11671091 has 2 divisors, whose sum is σ = 11671092. Its totient is φ = 11671090.

The previous prime is 11671081. The next prime is 11671117. The reversal of 11671091 is 19017611.

It is an a-pointer prime, because the next prime (11671117) can be obtained adding 11671091 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11671091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11671091.

It is not a weakly prime, because it can be changed into another prime (11671001) 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, 5835545 + 5835546.

It is an arithmetic number, because the mean of its divisors is an integer number (5835546).

Almost surely, 2^11671091 is an apocalyptic number.

11671091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11671091 is an equidigital number, since it uses as much as digits as its factorization.

11671091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 11671091 is about 3416.2978500125. The cubic root of 11671091 is about 226.8317369765.

The spelling of 11671091 in words is "eleven million, six hundred seventy-one thousand, ninety-one".