643104082 has 16 divisors (see below), whose sum is σ = 978284160. Its totient is φ = 317021328.

The previous prime is 643104079. The next prime is 643104107. The reversal of 643104082 is 280401346.

It is a self number, because there is not a number n which added to its sum of digits gives 643104082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123373 + ... + 128479.

It is an arithmetic number, because the mean of its divisors is an integer number (61142760).

Almost surely, 2^643104082 is an apocalyptic number.

643104082 is a deficient number, since it is larger than the sum of its proper divisors (335180078).

643104082 is a wasteful number, since it uses less digits than its factorization.

643104082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 643104082 is about 25359.4968798673. The cubic root of 643104082 is about 863.1648675062.

The spelling of 643104082 in words is "six hundred forty-three million, one hundred four thousand, eighty-two".