641316727 has 2 divisors, whose sum is σ = 641316728. Its totient is φ = 641316726.

The previous prime is 641316673. The next prime is 641316737. The reversal of 641316727 is 727613146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641316727 - 2¹⁵ = 641283959 is a prime.

It is a super-2 number, since 2×641316727² = 822574288659985058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641316737) 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 as a sum of consecutive naturals, namely, 320658363 + 320658364.

It is an arithmetic number, because the mean of its divisors is an integer number (320658364).

Almost surely, 2^641316727 is an apocalyptic number.

641316727 is a deficient number, since it is larger than the sum of its proper divisors (1).

641316727 is an equidigital number, since it uses as much as digits as its factorization.

641316727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 641316727 is about 25324.2320120473. The cubic root of 641316727 is about 862.3644716546.

The spelling of 641316727 in words is "six hundred forty-one million, three hundred sixteen thousand, seven hundred twenty-seven".