643413363 has 16 divisors (see below), whose sum is σ = 868855680. Its totient is φ = 423484416.

The previous prime is 643413361. The next prime is 643413371. The reversal of 643413363 is 363314346.

It is not a de Polignac number, because 643413363 - 2¹ = 643413361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (643413361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95283 + ... + 101811.

It is an arithmetic number, because the mean of its divisors is an integer number (54303480).

Almost surely, 2^643413363 is an apocalyptic number.

643413363 is a deficient number, since it is larger than the sum of its proper divisors (225442317).

643413363 is a wasteful number, since it uses less digits than its factorization.

643413363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946.

The product of its digits is 46656, while the sum is 33.

The square root of 643413363 is about 25365.5940793824. The cubic root of 643413363 is about 863.3032161379.

The spelling of 643413363 in words is "six hundred forty-three million, four hundred thirteen thousand, three hundred sixty-three".