13456649 has 2 divisors, whose sum is σ = 13456650. Its totient is φ = 13456648.

The previous prime is 13456643. The next prime is 13456657. The reversal of 13456649 is 94665431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13191424 + 265225 = 3632^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 13456649 - 2¹⁶ = 13391113 is a prime.

It is not a weakly prime, because it can be changed into another prime (13456643) 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, 6728324 + 6728325.

It is an arithmetic number, because the mean of its divisors is an integer number (6728325).

Almost surely, 2^13456649 is an apocalyptic number.

It is an amenable number.

13456649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13456649 is an equidigital number, since it uses as much as digits as its factorization.

13456649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 13456649 is about 3668.3305467201. The cubic root of 13456649 is about 237.8550125568.

The spelling of 13456649 in words is "thirteen million, four hundred fifty-six thousand, six hundred forty-nine".