641102608 has 10 divisors (see below), whose sum is σ = 1242136334. Its totient is φ = 320551296.

The previous prime is 641102569. The next prime is 641102629. The reversal of 641102608 is 806201146.

It can be written as a sum of positive squares in only one way, i.e., 359936784 + 281165824 = 18972^2 + 16768^2 .

It is a super-2 number, since 2×641102608² = 822025107968803328, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20034441 + ... + 20034472.

Almost surely, 2^641102608 is an apocalyptic number.

It is an amenable number.

641102608 is a deficient number, since it is larger than the sum of its proper divisors (601033726).

641102608 is a wasteful number, since it uses less digits than its factorization.

641102608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40068921 (or 40068915 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 641102608 is about 25320.0041074246. The cubic root of 641102608 is about 862.2684872712.

The spelling of 641102608 in words is "six hundred forty-one million, one hundred two thousand, six hundred eight".