647473497600 has 480 divisors, whose sum is σ = 2201160259584. Its totient is φ = 167679590400.

The previous prime is 647473497553. The next prime is 647473497623. The reversal of 647473497600 is 6794374746.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315378174 + ... + 315380226.

Almost surely, 2^647473497600 is an apocalyptic number.

647473497600 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 647473497600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100580129792).

647473497600 is an abundant number, since it is smaller than the sum of its proper divisors (1553686761984).

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

647473497600 is a wasteful number, since it uses less digits than its factorization.

647473497600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 57.

The spelling of 647473497600 in words is "six hundred forty-seven billion, four hundred seventy-three million, four hundred ninety-seven thousand, six hundred".