647613316746 has 64 divisors (see below), whose sum is σ = 1596581452800. Its totient is φ = 192920238000.

The previous prime is 647613316613. The next prime is 647613316747.

647613316746 is a `hidden beast` number, since 6 + 4 + 7 + 613 + 3 + 16 + 7 + 4 + 6 = 666.

647613316746 is nontrivially palindromic in base 10.

647613316746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 647613316692 and 647613316701.

It is not an unprimeable number, because it can be changed into a prime (647613316747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9204430 + ... + 9274521.

It is an arithmetic number, because the mean of its divisors is an integer number (24946585200).

Almost surely, 2^647613316746 is an apocalyptic number.

647613316746 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

647613316746 is an abundant number, since it is smaller than the sum of its proper divisors (948968136054).

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

647613316746 is a wasteful number, since it uses less digits than its factorization.

647613316746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18479032 (or 18479026 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The spelling of 647613316746 in words is "six hundred forty-seven billion, six hundred thirteen million, three hundred sixteen thousand, seven hundred forty-six".