11646997 has 2 divisors, whose sum is σ = 11646998. Its totient is φ = 11646996.

The previous prime is 11646967. The next prime is 11647001. The reversal of 11646997 is 79964611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11115556 + 531441 = 3334^2 + 729^2 .

It is an emirp because it is prime and its reverse (79964611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11646997 - 2²³ = 3258389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11646907) 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, 5823498 + 5823499.

It is an arithmetic number, because the mean of its divisors is an integer number (5823499).

Almost surely, 2^11646997 is an apocalyptic number.

It is an amenable number.

11646997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11646997 is an equidigital number, since it uses as much as digits as its factorization.

11646997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 11646997 is about 3412.7696963024. The cubic root of 11646997 is about 226.6755376670.

The spelling of 11646997 in words is "eleven million, six hundred forty-six thousand, nine hundred ninety-seven".