647334763 has 2 divisors, whose sum is σ = 647334764. Its totient is φ = 647334762.

The previous prime is 647334703. The next prime is 647334767. The reversal of 647334763 is 367433746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647334763 - 2²⁹ = 110463851 is a prime.

It is not a weakly prime, because it can be changed into another prime (647334767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323667381 + 323667382.

It is an arithmetic number, because the mean of its divisors is an integer number (323667382).

Almost surely, 2^647334763 is an apocalyptic number.

647334763 is a deficient number, since it is larger than the sum of its proper divisors (1).

647334763 is an equidigital number, since it uses as much as digits as its factorization.

647334763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 43.

The square root of 647334763 is about 25442.7742787613. The cubic root of 647334763 is about 865.0535180226.

It can be divided in two parts, 64733 and 4763, that added together give a palindrome (69496).

The spelling of 647334763 in words is "six hundred forty-seven million, three hundred thirty-four thousand, seven hundred sixty-three".