11564071 has 2 divisors, whose sum is σ = 11564072. Its totient is φ = 11564070.

The previous prime is 11564057. The next prime is 11564083. The reversal of 11564071 is 17046511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11564071 - 2²³ = 3175463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11564051) 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, 5782035 + 5782036.

It is an arithmetic number, because the mean of its divisors is an integer number (5782036).

Almost surely, 2^11564071 is an apocalyptic number.

11564071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11564071 is an equidigital number, since it uses as much as digits as its factorization.

11564071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 11564071 is about 3400.5986237720. The cubic root of 11564071 is about 226.1362832178.

The spelling of 11564071 in words is "eleven million, five hundred sixty-four thousand, seventy-one".