643000106 has 8 divisors (see below), whose sum is σ = 1102285920. Its totient is φ = 275571468.

The previous prime is 643000079. The next prime is 643000117. The reversal of 643000106 is 601000346.

643000106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×643000106² = 826898272632022472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22964276 + ... + 22964303.

It is an arithmetic number, because the mean of its divisors is an integer number (137785740).

Almost surely, 2^643000106 is an apocalyptic number.

643000106 is a deficient number, since it is larger than the sum of its proper divisors (459285814).

643000106 is a wasteful number, since it uses less digits than its factorization.

643000106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45928588.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 643000106 is about 25357.4467563278. The cubic root of 643000106 is about 863.1183466448.

The spelling of 643000106 in words is "six hundred forty-three million, one hundred six", and thus it is an aban number.