11647973 has 2 divisors, whose sum is σ = 11647974. Its totient is φ = 11647972.

The previous prime is 11647967. The next prime is 11647991. The reversal of 11647973 is 37974611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10903204 + 744769 = 3302^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 11647973 - 2⁸ = 11647717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11647073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5823986 + 5823987.

It is an arithmetic number, because the mean of its divisors is an integer number (5823987).

Almost surely, 2^11647973 is an apocalyptic number.

It is an amenable number.

11647973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11647973 is an equidigital number, since it uses as much as digits as its factorization.

11647973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 11647973 is about 3412.9126856689. The cubic root of 11647973 is about 226.6818691745.

The spelling of 11647973 in words is "eleven million, six hundred forty-seven thousand, nine hundred seventy-three".