6643255343 has 8 divisors (see below), whose sum is σ = 6733082496. Its totient is φ = 6553661400.

The previous prime is 6643255331. The next prime is 6643255357. The reversal of 6643255343 is 3435523466.

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 6643255343 - 2⁴ = 6643255327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6643255343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643255313) 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, 563 + ... + 115268.

It is an arithmetic number, because the mean of its divisors is an integer number (841635312).

Almost surely, 2^6643255343 is an apocalyptic number.

6643255343 is a deficient number, since it is larger than the sum of its proper divisors (89827153).

6643255343 is a wasteful number, since it uses less digits than its factorization.

6643255343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116605.

The product of its digits is 777600, while the sum is 41.

The square root of 6643255343 is about 81506.1675151028. The cubic root of 6643255343 is about 1879.8663839511.

The spelling of 6643255343 in words is "six billion, six hundred forty-three million, two hundred fifty-five thousand, three hundred forty-three".