641111196 has 24 divisors (see below), whose sum is σ = 1631919744. Its totient is φ = 194276080.

The previous prime is 641111189. The next prime is 641111201. The reversal of 641111196 is 691111146.

It is a super-2 number, since 2×641111196² = 822047131273100832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2428320 + ... + 2428583.

It is an arithmetic number, because the mean of its divisors is an integer number (67996656).

Almost surely, 2^641111196 is an apocalyptic number.

641111196 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

641111196 is an abundant number, since it is smaller than the sum of its proper divisors (990808548).

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

641111196 is a wasteful number, since it uses less digits than its factorization.

641111196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4856921 (or 4856919 counting only the distinct ones).

The product of its digits is 1296, while the sum is 30.

The square root of 641111196 is about 25320.1736960867. The cubic root of 641111196 is about 862.2723374758.

The spelling of 641111196 in words is "six hundred forty-one million, one hundred eleven thousand, one hundred ninety-six".