1647048671 has 2 divisors, whose sum is σ = 1647048672. Its totient is φ = 1647048670.

The previous prime is 1647048647. The next prime is 1647048677. The reversal of 1647048671 is 1768407461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1647048671 - 2¹⁴ = 1647032287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1647048677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 823524335 + 823524336.

It is an arithmetic number, because the mean of its divisors is an integer number (823524336).

Almost surely, 2^1647048671 is an apocalyptic number.

1647048671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1647048671 is an equidigital number, since it uses as much as digits as its factorization.

1647048671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 1647048671 is about 40583.8474149507. The cubic root of 1647048671 is about 1180.9607876791.

The spelling of 1647048671 in words is "one billion, six hundred forty-seven million, forty-eight thousand, six hundred seventy-one".