647824097057 has 2 divisors, whose sum is σ = 647824097058. Its totient is φ = 647824097056.

The previous prime is 647824097051. The next prime is 647824097131. The reversal of 647824097057 is 750790428746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359069402176 + 288754694881 = 599224^2 + 537359^2 .

It is a cyclic number.

It is not a de Polignac number, because 647824097057 - 2¹² = 647824092961 is a prime.

It is a super-2 number, since 2×647824097057² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 647824096987 and 647824097005.

It is not a weakly prime, because it can be changed into another prime (647824097051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323912048528 + 323912048529.

It is an arithmetic number, because the mean of its divisors is an integer number (323912048529).

Almost surely, 2^647824097057 is an apocalyptic number.

It is an amenable number.

647824097057 is a deficient number, since it is larger than the sum of its proper divisors (1).

647824097057 is an equidigital number, since it uses as much as digits as its factorization.

647824097057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 647824097057 in words is "six hundred forty-seven billion, eight hundred twenty-four million, ninety-seven thousand, fifty-seven".