680748546456 has 128 divisors (see below), whose sum is σ = 2067012000000. Its totient is φ = 205873678080.

The previous prime is 680748546437. The next prime is 680748546553. The reversal of 680748546456 is 654645847086.

It is a happy number.

680748546456 is a `hidden beast` number, since 6 + 8 + 0 + 7 + 48 + 546 + 45 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 680748546393 and 680748546402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 898540 + ... + 1472708.

It is an arithmetic number, because the mean of its divisors is an integer number (16148531250).

Almost surely, 2^680748546456 is an apocalyptic number.

680748546456 is a gapful number since it is divisible by the number (66) 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 680748546456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033506000000).

680748546456 is an abundant number, since it is smaller than the sum of its proper divisors (1386263453544).

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

680748546456 is a wasteful number, since it uses less digits than its factorization.

680748546456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574694 (or 574684 counting only the distinct ones).

The product of its (nonzero) digits is 154828800, while the sum is 63.

The spelling of 680748546456 in words is "six hundred eighty billion, seven hundred forty-eight million, five hundred forty-six thousand, four hundred fifty-six".