643034334 has 8 divisors (see below), whose sum is σ = 1286068680. Its totient is φ = 214344776.

The previous prime is 643034323. The next prime is 643034387. The reversal of 643034334 is 433430346.

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

643034334 is an admirable number.

It is a congruent 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, 53586189 + ... + 53586200.

It is an arithmetic number, because the mean of its divisors is an integer number (160758585).

Almost surely, 2^643034334 is an apocalyptic number.

643034334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643034334 is a wasteful number, since it uses less digits than its factorization.

643034334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107172394.

The product of its (nonzero) digits is 31104, while the sum is 30.

The square root of 643034334 is about 25358.1216575676. The cubic root of 643034334 is about 863.1336614638.

The spelling of 643034334 in words is "six hundred forty-three million, thirty-four thousand, three hundred thirty-four".