647824088893 has 2 divisors, whose sum is σ = 647824088894. Its totient is φ = 647824088892.

The previous prime is 647824088881. The next prime is 647824088909. The reversal of 647824088893 is 398880428746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570118623844 + 77705465049 = 755062^2 + 278757^2 .

It is a cyclic number.

It is not a de Polignac number, because 647824088893 - 2⁹ = 647824088381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647824088803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323912044446 + 323912044447.

It is an arithmetic number, because the mean of its divisors is an integer number (323912044447).

Almost surely, 2^647824088893 is an apocalyptic number.

It is an amenable number.

647824088893 is a deficient number, since it is larger than the sum of its proper divisors (1).

647824088893 is an equidigital number, since it uses as much as digits as its factorization.

647824088893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148635648, while the sum is 67.

The spelling of 647824088893 in words is "six hundred forty-seven billion, eight hundred twenty-four million, eighty-eight thousand, eight hundred ninety-three".