6440433063 has 4 divisors (see below), whose sum is σ = 8587244088. Its totient is φ = 4293622040.

The previous prime is 6440433031. The next prime is 6440433121. The reversal of 6440433063 is 3603340446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6440433063 - 2⁵ = 6440433031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445433063) 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, 1073405508 + ... + 1073405513.

It is an arithmetic number, because the mean of its divisors is an integer number (2146811022).

Almost surely, 2^6440433063 is an apocalyptic number.

6440433063 is a deficient number, since it is larger than the sum of its proper divisors (2146811025).

6440433063 is a wasteful number, since it uses less digits than its factorization.

6440433063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146811024.

The product of its (nonzero) digits is 62208, while the sum is 33.

The square root of 6440433063 is about 80252.3087705270. The cubic root of 6440433063 is about 1860.5371962625.

The spelling of 6440433063 in words is "six billion, four hundred forty million, four hundred thirty-three thousand, sixty-three".