11645761 has 2 divisors, whose sum is σ = 11645762. Its totient is φ = 11645760.

The previous prime is 11645749. The next prime is 11645771. The reversal of 11645761 is 16754611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 4596736 = 2655^2 + 2144^2 .

It is an emirp because it is prime and its reverse (16754611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11645761 - 2¹⁷ = 11514689 is a prime.

It is not a weakly prime, because it can be changed into another prime (11645741) 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, 5822880 + 5822881.

It is an arithmetic number, because the mean of its divisors is an integer number (5822881).

Almost surely, 2^11645761 is an apocalyptic number.

It is an amenable number.

11645761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11645761 is an equidigital number, since it uses as much as digits as its factorization.

11645761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 11645761 is about 3412.5886069083. The cubic root of 11645761 is about 226.6675189799.

The spelling of 11645761 in words is "eleven million, six hundred forty-five thousand, seven hundred sixty-one".