6443481 has 16 divisors (see below), whose sum is σ = 9696960. Its totient is φ = 3769920.

The previous prime is 6443471. The next prime is 6443483. The reversal of 6443481 is 1843446.

It is not a de Polignac number, because 6443481 - 2⁶ = 6443417 is a prime.

It is a super-2 number, since 2×6443481² = 83036894794722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6443483) 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 in 15 ways as a sum of consecutive naturals, for example, 2410 + ... + 4323.

It is an arithmetic number, because the mean of its divisors is an integer number (606060).

Almost surely, 2^6443481 is an apocalyptic number.

It is an amenable number.

6443481 is a deficient number, since it is larger than the sum of its proper divisors (3253479).

6443481 is a wasteful number, since it uses less digits than its factorization.

6443481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776.

The product of its digits is 9216, while the sum is 30.

The square root of 6443481 is about 2538.4012685153. The cubic root of 6443481 is about 186.0830649915.

The spelling of 6443481 in words is "six million, four hundred forty-three thousand, four hundred eighty-one".