641522112 has 168 divisors, whose sum is σ = 2154326400. Its totient is φ = 166602240.

The previous prime is 641522111. The next prime is 641522159. The reversal of 641522112 is 211225146.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641522111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100389 + ... + 106587.

Almost surely, 2^641522112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641522112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077163200).

641522112 is an abundant number, since it is smaller than the sum of its proper divisors (1512804288).

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

641522112 is a wasteful number, since it uses less digits than its factorization.

641522112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239 (or 6222 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 641522112 is about 25328.2867955967. The cubic root of 641522112 is about 862.4565207236.

Adding to 641522112 its reverse (211225146), we get a palindrome (852747258).

It can be divided in two parts, 641 and 522112, that added together give a triangular number (522753 = T₁₀₂₂).

The spelling of 641522112 in words is "six hundred forty-one million, five hundred twenty-two thousand, one hundred twelve".