643285350 has 36 divisors (see below), whose sum is σ = 1728294516. Its totient is φ = 171542640.

The previous prime is 643285333. The next prime is 643285373. The reversal of 643285350 is 53582346.

It is a happy number.

643285350 is a `hidden beast` number, since 643 + 2 + 8 + 5 + 3 + 5 + 0 = 666.

643285350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 714312 + ... + 715211.

It is an arithmetic number, because the mean of its divisors is an integer number (48008181).

Almost surely, 2^643285350 is an apocalyptic number.

643285350 is an abundant number, since it is smaller than the sum of its proper divisors (1085009166).

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

643285350 is a wasteful number, since it uses less digits than its factorization.

643285350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429541 (or 1429533 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 643285350 is about 25363.0705948629. The cubic root of 643285350 is about 863.2459583049.

The spelling of 643285350 in words is "six hundred forty-three million, two hundred eighty-five thousand, three hundred fifty".