11745649 has 2 divisors, whose sum is σ = 11745650. Its totient is φ = 11745648.

The previous prime is 11745647. The next prime is 11745659. The reversal of 11745649 is 94654711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 2745649 = 3000^2 + 1657^2 .

It is a cyclic number.

It is not a de Polignac number, because 11745649 - 2¹ = 11745647 is a prime.

Together with 11745647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11745647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5872824 + 5872825.

It is an arithmetic number, because the mean of its divisors is an integer number (5872825).

Almost surely, 2^11745649 is an apocalyptic number.

It is an amenable number.

11745649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11745649 is an equidigital number, since it uses as much as digits as its factorization.

11745649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 11745649 is about 3427.1925828585. The cubic root of 11745649 is about 227.3137323298.

The spelling of 11745649 in words is "eleven million, seven hundred forty-five thousand, six hundred forty-nine".