641727 has 12 divisors (see below), whose sum is σ = 936624. Its totient is φ = 423360.

The previous prime is 641713. The next prime is 641747. The reversal of 641727 is 727146.

It is not a de Polignac number, because 641727 - 2⁸ = 641471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 641727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641747) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 702 + ... + 1332.

It is an arithmetic number, because the mean of its divisors is an integer number (78052).

2⁶⁴¹⁷²⁷ is an apocalyptic number.

641727 is a deficient number, since it is larger than the sum of its proper divisors (294897).

641727 is a wasteful number, since it uses less digits than its factorization.

641727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 641727 is about 801.0786478243. The cubic root of 641727 is about 86.2548327475.

The spelling of 641727 in words is "six hundred forty-one thousand, seven hundred twenty-seven".