641224208 has 40 divisors (see below), whose sum is σ = 1278459840. Its totient is φ = 311333760.

The previous prime is 641224193. The next prime is 641224229. The reversal of 641224208 is 802422146.

It is a super-2 number, since 2×641224208² = 822336969850454528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496043 + ... + 497333.

It is an arithmetic number, because the mean of its divisors is an integer number (31961496).

Almost surely, 2^641224208 is an apocalyptic number.

It is an amenable number.

641224208 is a deficient number, since it is larger than the sum of its proper divisors (637235632).

641224208 is a wasteful number, since it uses less digits than its factorization.

641224208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 641224208 is about 25322.4052570051. The cubic root of 641224208 is about 862.3230002401.

The spelling of 641224208 in words is "six hundred forty-one million, two hundred twenty-four thousand, two hundred eight".