6448447 has 4 divisors (see below), whose sum is σ = 6585696. Its totient is φ = 6311200.

The previous prime is 6448427. The next prime is 6448451. The reversal of 6448447 is 7448446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7448446 = 2 ⋅3724223.

It is a cyclic number.

It is not a de Polignac number, because 6448447 - 2⁷ = 6448319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448427) 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 in 3 ways as a sum of consecutive naturals, for example, 68554 + ... + 68647.

It is an arithmetic number, because the mean of its divisors is an integer number (1646424).

Almost surely, 2^6448447 is an apocalyptic number.

6448447 is a deficient number, since it is larger than the sum of its proper divisors (137249).

6448447 is a wasteful number, since it uses less digits than its factorization.

6448447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137248.

The product of its digits is 86016, while the sum is 37.

The square root of 6448447 is about 2539.3792548574. The cubic root of 6448447 is about 186.1308575436.

Subtracting 6448447 from its reverse (7448446), we obtain a palindrome (999999).

The spelling of 6448447 in words is "six million, four hundred forty-eight thousand, four hundred forty-seven".