643053346 has 32 divisors (see below), whose sum is σ = 1061786880. Its totient is φ = 290257344.

The previous prime is 643053329. The next prime is 643053349. The reversal of 643053346 is 643350346.

It is not an unprimeable number, because it can be changed into a prime (643053349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604411 + ... + 605473.

It is an arithmetic number, because the mean of its divisors is an integer number (33180840).

Almost surely, 2^643053346 is an apocalyptic number.

643053346 is a deficient number, since it is larger than the sum of its proper divisors (418733534).

643053346 is a wasteful number, since it uses less digits than its factorization.

643053346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570.

The product of its (nonzero) digits is 77760, while the sum is 34.

The square root of 643053346 is about 25358.4965248336. The cubic root of 643053346 is about 863.1421678709.

The spelling of 643053346 in words is "six hundred forty-three million, fifty-three thousand, three hundred forty-six".