643282346 has 32 divisors (see below), whose sum is σ = 1169240832. Its totient is φ = 259119360.

The previous prime is 643282327. The next prime is 643282399.

643282346 is nontrivially palindromic in base 10.

It is an unprimeable number.

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, 235931 + ... + 238641.

It is an arithmetic number, because the mean of its divisors is an integer number (36538776).

Almost surely, 2^643282346 is an apocalyptic number.

643282346 is a deficient number, since it is larger than the sum of its proper divisors (525958486).

643282346 is a wasteful number, since it uses less digits than its factorization.

643282346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734.

The product of its digits is 165888, while the sum is 38.

The square root of 643282346 is about 25363.0113748348. The cubic root of 643282346 is about 863.2446145804.

The spelling of 643282346 in words is "six hundred forty-three million, two hundred eighty-two thousand, three hundred forty-six".