11647001 has 2 divisors, whose sum is σ = 11647002. Its totient is φ = 11647000.

The previous prime is 11646997. The next prime is 11647007. The reversal of 11647001 is 10074611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 491401 = 3340^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 11647001 - 2² = 11646997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11647007) 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, 5823500 + 5823501.

It is an arithmetic number, because the mean of its divisors is an integer number (5823501).

Almost surely, 2^11647001 is an apocalyptic number.

It is an amenable number.

11647001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11647001 is an equidigital number, since it uses as much as digits as its factorization.

11647001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 11647001 is about 3412.7702823366. The cubic root of 11647001 is about 226.6755636166.

The spelling of 11647001 in words is "eleven million, six hundred forty-seven thousand, one".