6443404601 has 4 divisors (see below), whose sum is σ = 6471058932. Its totient is φ = 6415750272.

The previous prime is 6443404559. The next prime is 6443404603. The reversal of 6443404601 is 1064043446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1064043446 = 2 ⋅532021723.

It can be written as a sum of positive squares in 2 ways, for example, as 4485784576 + 1957620025 = 66976^2 + 44245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6443404601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6443404603) 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, 13826816 + ... + 13827281.

It is an arithmetic number, because the mean of its divisors is an integer number (1617764733).

Almost surely, 2^6443404601 is an apocalyptic number.

It is an amenable number.

6443404601 is a deficient number, since it is larger than the sum of its proper divisors (27654331).

6443404601 is a wasteful number, since it uses less digits than its factorization.

6443404601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27654330.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 6443404601 is about 80270.8203583344. The cubic root of 6443404601 is about 1860.8232953937.

The spelling of 6443404601 in words is "six billion, four hundred forty-three million, four hundred four thousand, six hundred one".