647789034983 has 2 divisors, whose sum is σ = 647789034984. Its totient is φ = 647789034982.

The previous prime is 647789034979. The next prime is 647789035051. The reversal of 647789034983 is 389430987746.

It is an a-pointer prime, because the next prime (647789035051) can be obtained adding 647789034983 to its sum of digits (68).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647789034983 - 2² = 647789034979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647789034923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323894517491 + 323894517492.

It is an arithmetic number, because the mean of its divisors is an integer number (323894517492).

Almost surely, 2^647789034983 is an apocalyptic number.

647789034983 is a deficient number, since it is larger than the sum of its proper divisors (1).

647789034983 is an equidigital number, since it uses as much as digits as its factorization.

647789034983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219469824, while the sum is 68.

The spelling of 647789034983 in words is "six hundred forty-seven billion, seven hundred eighty-nine million, thirty-four thousand, nine hundred eighty-three".