647932550068 has 24 divisors (see below), whose sum is σ = 1146739991040. Its totient is φ = 320293300800.

The previous prime is 647932550003. The next prime is 647932550101. The reversal of 647932550068 is 860055239746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3579543 + ... + 3756193.

It is an arithmetic number, because the mean of its divisors is an integer number (47780832960).

Almost surely, 2^647932550068 is an apocalyptic number.

It is an amenable number.

647932550068 is a deficient number, since it is larger than the sum of its proper divisors (498807440972).

647932550068 is a wasteful number, since it uses less digits than its factorization.

647932550068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187047 (or 187045 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 647932550068 in words is "six hundred forty-seven billion, nine hundred thirty-two million, five hundred fifty thousand, sixty-eight".