647317612740 has 48 divisors (see below), whose sum is σ = 1817682753600. Its totient is φ = 172123416960.

The previous prime is 647317612687. The next prime is 647317612783. The reversal of 647317612740 is 47216713746.

It is a super-3 number, since 3×647317612740³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 647317612740.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15435546 + ... + 15477425.

It is an arithmetic number, because the mean of its divisors is an integer number (37868390700).

Almost surely, 2^647317612740 is an apocalyptic number.

647317612740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

647317612740 is an abundant number, since it is smaller than the sum of its proper divisors (1170365140860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647317612740 is a wasteful number, since it uses less digits than its factorization.

647317612740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30913332 (or 30913330 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 647317612740 in words is "six hundred forty-seven billion, three hundred seventeen million, six hundred twelve thousand, seven hundred forty".