647855604600 has 384 divisors, whose sum is σ = 2179039104000. Its totient is φ = 158702561280.

The previous prime is 647855604589. The next prime is 647855604637. The reversal of 647855604600 is 6406558746.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 58396654 + ... + 58407746.

It is an arithmetic number, because the mean of its divisors is an integer number (5674581000).

Almost surely, 2^647855604600 is an apocalyptic number.

647855604600 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 647855604600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1089519552000).

647855604600 is an abundant number, since it is smaller than the sum of its proper divisors (1531183499400).

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

647855604600 is a wasteful number, since it uses less digits than its factorization.

647855604600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11287 (or 11278 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 647855604600 in words is "six hundred forty-seven billion, eight hundred fifty-five million, six hundred four thousand, six hundred".