647034864120 has 768 divisors, whose sum is σ = 2347893475200. Its totient is φ = 153837895680.

The previous prime is 647034864107. The next prime is 647034864173. The reversal of 647034864120 is 21468430746.

647034864120 is a `hidden beast` number, since 6 + 47 + 0 + 3 + 486 + 4 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1919984592 + ... + 1919984928.

Almost surely, 2^647034864120 is an apocalyptic number.

647034864120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647034864120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173946737600).

647034864120 is an abundant number, since it is smaller than the sum of its proper divisors (1700858611080).

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

647034864120 is a wasteful number, since it uses less digits than its factorization.

647034864120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 647034864120 in words is "six hundred forty-seven billion, thirty-four million, eight hundred sixty-four thousand, one hundred twenty".