647945770846 has 24 divisors (see below), whose sum is σ = 1068353334720. Its totient is φ = 294508109280.

The previous prime is 647945770841. The next prime is 647945770897. The reversal of 647945770846 is 648077549746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647945770841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7740850 + ... + 7824106.

It is an arithmetic number, because the mean of its divisors is an integer number (44514722280).

Almost surely, 2^647945770846 is an apocalyptic number.

647945770846 is a deficient number, since it is larger than the sum of its proper divisors (420407563874).

647945770846 is a wasteful number, since it uses less digits than its factorization.

647945770846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115440 (or 115429 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 67.

The spelling of 647945770846 in words is "six hundred forty-seven billion, nine hundred forty-five million, seven hundred seventy thousand, eight hundred forty-six".