13648447 has 2 divisors, whose sum is σ = 13648448. Its totient is φ = 13648446.

The previous prime is 13648429. The next prime is 13648457. The reversal of 13648447 is 74484631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13648447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13648457) 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, 6824223 + 6824224.

It is an arithmetic number, because the mean of its divisors is an integer number (6824224).

Almost surely, 2^13648447 is an apocalyptic number.

13648447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13648447 is an equidigital number, since it uses as much as digits as its factorization.

13648447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 13648447 is about 3694.3804622697. The cubic root of 13648447 is about 238.9797371989.

The spelling of 13648447 in words is "thirteen million, six hundred forty-eight thousand, four hundred forty-seven".