641103611 has 4 divisors (see below), whose sum is σ = 641178000. Its totient is φ = 641029224.

The previous prime is 641103607. The next prime is 641103649. The reversal of 641103611 is 116301146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641103611 - 2² = 641103607 is a prime.

It is a super-2 number, since 2×641103611² = 822027680074478642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641103811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22271 + ... + 42168.

It is an arithmetic number, because the mean of its divisors is an integer number (160294500).

Almost surely, 2^641103611 is an apocalyptic number.

641103611 is a deficient number, since it is larger than the sum of its proper divisors (74389).

641103611 is an equidigital number, since it uses as much as digits as its factorization.

641103611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74388.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 641103611 is about 25320.0239138908. The cubic root of 641103611 is about 862.2689369417.

Adding to 641103611 its reverse (116301146), we get a palindrome (757404757).

The spelling of 641103611 in words is "six hundred forty-one million, one hundred three thousand, six hundred eleven".