641827413 has 12 divisors (see below), whose sum is σ = 927364620. Its totient is φ = 427755456.

The previous prime is 641827349. The next prime is 641827447. The reversal of 641827413 is 314728146.

641827413 is a `hidden beast` number, since 64 + 182 + 7 + 413 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 615387249 = 5142^2 + 24807^2 .

It is not a de Polignac number, because 641827413 - 2⁶ = 641827349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641827513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27903 + ... + 45411.

It is an arithmetic number, because the mean of its divisors is an integer number (77280385).

Almost surely, 2^641827413 is an apocalyptic number.

It is an amenable number.

641827413 is a deficient number, since it is larger than the sum of its proper divisors (285537207).

641827413 is a wasteful number, since it uses less digits than its factorization.

641827413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21588 (or 21585 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 641827413 is about 25334.3129569365. The cubic root of 641827413 is about 862.5933136596.

The spelling of 641827413 in words is "six hundred forty-one million, eight hundred twenty-seven thousand, four hundred thirteen".