678652303680 has 336 divisors, whose sum is σ = 2515039887360. Its totient is φ = 166973239296.

The previous prime is 678652303613. The next prime is 678652303697. The reversal of 678652303680 is 86303256876.

678652303680 is a `hidden beast` number, since 6 + 7 + 8 + 6 + 523 + 0 + 36 + 80 = 666.

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, 134144991 + ... + 134150049.

It is an arithmetic number, because the mean of its divisors is an integer number (7485237760).

Almost surely, 2^678652303680 is an apocalyptic number.

678652303680 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 678652303680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257519943680).

678652303680 is an abundant number, since it is smaller than the sum of its proper divisors (1836387583680).

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

678652303680 is a wasteful number, since it uses less digits than its factorization.

678652303680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678 (or 8665 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 678652303680 in words is "six hundred seventy-eight billion, six hundred fifty-two million, three hundred three thousand, six hundred eighty".