643067063 has 8 divisors (see below), whose sum is σ = 654016176. Its totient is φ = 632131200.

The previous prime is 643067059. The next prime is 643067197. The reversal of 643067063 is 360760346.

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

It is a cyclic number.

It is not a de Polignac number, because 643067063 - 2² = 643067059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643067053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169103 + ... + 172863.

It is an arithmetic number, because the mean of its divisors is an integer number (81752022).

Almost surely, 2^643067063 is an apocalyptic number.

643067063 is a deficient number, since it is larger than the sum of its proper divisors (10949113).

643067063 is a wasteful number, since it uses less digits than its factorization.

643067063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 643067063 is about 25358.7669850093. The cubic root of 643067063 is about 863.1483050688.

The spelling of 643067063 in words is "six hundred forty-three million, sixty-seven thousand, sixty-three".