643122150 has 96 divisors (see below), whose sum is σ = 1777171968. Its totient is φ = 152572800.

The previous prime is 643122107. The next prime is 643122167. The reversal of 643122150 is 51221346.

643122150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 643122150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73404 + ... + 81696.

It is an arithmetic number, because the mean of its divisors is an integer number (18512208).

Almost surely, 2^643122150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 643122150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888585984).

643122150 is an abundant number, since it is smaller than the sum of its proper divisors (1134049818).

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

643122150 is a wasteful number, since it uses less digits than its factorization.

643122150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366 (or 8361 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 643122150 is about 25359.8531147166. The cubic root of 643122150 is about 863.1729509654.

Adding to 643122150 its reverse (51221346), we get a palindrome (694343496).

The spelling of 643122150 in words is "six hundred forty-three million, one hundred twenty-two thousand, one hundred fifty".