641235224 has 32 divisors (see below), whose sum is σ = 1386249120. Its totient is φ = 272380416.

The previous prime is 641235209. The next prime is 641235229. The reversal of 641235224 is 422532146.

It is a super-2 number, since 2×641235224² = 822365224996660352, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641235229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44339 + ... + 56994.

It is an arithmetic number, because the mean of its divisors is an integer number (43320285).

Almost surely, 2^641235224 is an apocalyptic number.

It is an amenable number.

641235224 is an abundant number, since it is smaller than the sum of its proper divisors (745013896).

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

641235224 is a wasteful number, since it uses less digits than its factorization.

641235224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101459 (or 101455 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 641235224 is about 25322.6227709532. The cubic root of 641235224 is about 862.3279383442.

The spelling of 641235224 in words is "six hundred forty-one million, two hundred thirty-five thousand, two hundred twenty-four".