641140071 has 32 divisors (see below), whose sum is σ = 1013591040. Its totient is φ = 355363200.

The previous prime is 641140067. The next prime is 641140103. The reversal of 641140071 is 170041146.

641140071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641140071 - 2² = 641140067 is a prime.

It is a super-2 number, since 2×641140071² = 822121181283770082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641140051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39906 + ... + 53616.

It is an arithmetic number, because the mean of its divisors is an integer number (31674720).

Almost surely, 2^641140071 is an apocalyptic number.

641140071 is a deficient number, since it is larger than the sum of its proper divisors (372450969).

641140071 is a wasteful number, since it uses less digits than its factorization.

641140071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13847.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 641140071 is about 25320.7438871768. The cubic root of 641140071 is about 862.2852825729.

The spelling of 641140071 in words is "six hundred forty-one million, one hundred forty thousand, seventy-one".