678798634560 has 112 divisors (see below), whose sum is σ = 2176524447552. Its totient is φ = 179220736000.

The previous prime is 678798634471. The next prime is 678798634567. The reversal of 678798634560 is 65436897876.

It is not an unprimeable number, because it can be changed into a prime (678798634567) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3403446 + ... + 3597365.

It is an arithmetic number, because the mean of its divisors is an integer number (19433253996).

Almost surely, 2^678798634560 is an apocalyptic number.

678798634560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

678798634560 is an abundant number, since it is smaller than the sum of its proper divisors (1497725812992).

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

678798634560 is a wasteful number, since it uses less digits than its factorization.

678798634560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000932 (or 7000922 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 69.

The spelling of 678798634560 in words is "six hundred seventy-eight billion, seven hundred ninety-eight million, six hundred thirty-four thousand, five hundred sixty".