641641422 has 8 divisors (see below), whose sum is σ = 1283282856. Its totient is φ = 213880472.

The previous prime is 641641417. The next prime is 641641439. The reversal of 641641422 is 224146146.

It is a happy number.

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

641641422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 641641422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53470113 + ... + 53470124.

It is an arithmetic number, because the mean of its divisors is an integer number (160410357).

Almost surely, 2^641641422 is an apocalyptic number.

641641422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

641641422 is a wasteful number, since it uses less digits than its factorization.

641641422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106940242.

The product of its digits is 9216, while the sum is 30.

The square root of 641641422 is about 25330.6419579133. The cubic root of 641641422 is about 862.5099838374.

Adding to 641641422 its reverse (224146146), we get a palindrome (865787568).

The spelling of 641641422 in words is "six hundred forty-one million, six hundred forty-one thousand, four hundred twenty-two".