643650130 has 16 divisors (see below), whose sum is σ = 1173237120. Its totient is φ = 254200752.

The previous prime is 643650127. The next prime is 643650131. The reversal of 643650130 is 31056346.

It is not an unprimeable number, because it can be changed into a prime (643650131) 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, 406584 + ... + 408163.

It is an arithmetic number, because the mean of its divisors is an integer number (73327320).

Almost surely, 2^643650130 is an apocalyptic number.

643650130 is a deficient number, since it is larger than the sum of its proper divisors (529586990).

643650130 is a wasteful number, since it uses less digits than its factorization.

643650130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814833.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 643650130 is about 25370.2607396928. The cubic root of 643650130 is about 863.4090976013.

The spelling of 643650130 in words is "six hundred forty-three million, six hundred fifty thousand, one hundred thirty".