643563114 has 16 divisors (see below), whose sum is σ = 1294568352. Its totient is φ = 213280688.

The previous prime is 643563103. The next prime is 643563119. The reversal of 643563114 is 411365346.

It is not an unprimeable number, because it can be changed into a prime (643563119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308964 + ... + 311039.

It is an arithmetic number, because the mean of its divisors is an integer number (80910522).

Almost surely, 2^643563114 is an apocalyptic number.

643563114 is an abundant number, since it is smaller than the sum of its proper divisors (651005238).

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

643563114 is a wasteful number, since it uses less digits than its factorization.

643563114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620181.

The product of its digits is 25920, while the sum is 33.

The square root of 643563114 is about 25368.5457604491. The cubic root of 643563114 is about 863.3701873360.

The spelling of 643563114 in words is "six hundred forty-three million, five hundred sixty-three thousand, one hundred fourteen".