647540627983 has 2 divisors, whose sum is σ = 647540627984. Its totient is φ = 647540627982.

The previous prime is 647540627927. The next prime is 647540628013. The reversal of 647540627983 is 389726045746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647540627983 - 2⁹ = 647540627471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647540637983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323770313991 + 323770313992.

It is an arithmetic number, because the mean of its divisors is an integer number (323770313992).

Almost surely, 2^647540627983 is an apocalyptic number.

647540627983 is a deficient number, since it is larger than the sum of its proper divisors (1).

647540627983 is an equidigital number, since it uses as much as digits as its factorization.

647540627983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60963840, while the sum is 61.

The spelling of 647540627983 in words is "six hundred forty-seven billion, five hundred forty million, six hundred twenty-seven thousand, nine hundred eighty-three".