6464443 has 4 divisors (see below), whose sum is σ = 6472648. Its totient is φ = 6456240.

The previous prime is 6464431. The next prime is 6464483. The reversal of 6464443 is 3444646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3444646 = 2 ⋅1722323.

It is a cyclic number.

It is not a de Polignac number, because 6464443 - 2⁵ = 6464411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6464413) 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, 2778 + ... + 4543.

It is an arithmetic number, because the mean of its divisors is an integer number (1618162).

Almost surely, 2^6464443 is an apocalyptic number.

6464443 is a deficient number, since it is larger than the sum of its proper divisors (8205).

6464443 is an equidigital number, since it uses as much as digits as its factorization.

6464443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204.

The product of its digits is 27648, while the sum is 31.

The square root of 6464443 is about 2542.5268926798. The cubic root of 6464443 is about 186.2846356919.

The spelling of 6464443 in words is "six million, four hundred sixty-four thousand, four hundred forty-three".