643052794 has 8 divisors (see below), whose sum is σ = 964877760. Its totient is φ = 321426876.

The previous prime is 643052771. The next prime is 643052797. The reversal of 643052794 is 497250346.

It is a happy number.

643052794 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 not an unprimeable number, because it can be changed into a prime (643052797) 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, 41404 + ... + 54775.

It is an arithmetic number, because the mean of its divisors is an integer number (120609720).

Almost surely, 2^643052794 is an apocalyptic number.

643052794 is a deficient number, since it is larger than the sum of its proper divisors (321824966).

643052794 is a wasteful number, since it uses less digits than its factorization.

643052794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99524.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 643052794 is about 25358.4856409053. The cubic root of 643052794 is about 863.1419208957.

The spelling of 643052794 in words is "six hundred forty-three million, fifty-two thousand, seven hundred ninety-four".