6446744533 has 8 divisors (see below), whose sum is σ = 6462300960. Its totient is φ = 6431202960.

The previous prime is 6446744527. The next prime is 6446744561. The reversal of 6446744533 is 3354476446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6446744533 - 2⁹ = 6446744021 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 (6446744933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760058 + ... + 1763716.

It is an arithmetic number, because the mean of its divisors is an integer number (807787620).

Almost surely, 2^6446744533 is an apocalyptic number.

It is an amenable number.

6446744533 is a deficient number, since it is larger than the sum of its proper divisors (15556427).

6446744533 is a wasteful number, since it uses less digits than its factorization.

6446744533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7427.

The product of its digits is 2903040, while the sum is 46.

The square root of 6446744533 is about 80291.6218107469. The cubic root of 6446744533 is about 1861.1447584563.

The spelling of 6446744533 in words is "six billion, four hundred forty-six million, seven hundred forty-four thousand, five hundred thirty-three".