6448813 has 4 divisors (see below), whose sum is σ = 7370080. Its totient is φ = 5527548.

The previous prime is 6448811. The next prime is 6448853. The reversal of 6448813 is 3188446.

6448813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3188446 = 2 ⋅1594223.

It is a cyclic number.

It is not a de Polignac number, because 6448813 - 2¹ = 6448811 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 (6448811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460623 + ... + 460636.

It is an arithmetic number, because the mean of its divisors is an integer number (1842520).

Almost surely, 2^6448813 is an apocalyptic number.

It is an amenable number.

6448813 is a deficient number, since it is larger than the sum of its proper divisors (921267).

6448813 is an equidigital number, since it uses as much as digits as its factorization.

6448813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921266.

The product of its digits is 18432, while the sum is 34.

The square root of 6448813 is about 2539.4513186907. The cubic root of 6448813 is about 186.1343789395.

The spelling of 6448813 in words is "six million, four hundred forty-eight thousand, eight hundred thirteen".