678193069320 has 192 divisors, whose sum is σ = 2513304022320. Its totient is φ = 157119823872.

The previous prime is 678193069297. The next prime is 678193069327. The reversal of 678193069320 is 23960391876.

678193069320 is a `hidden beast` number, since 6 + 7 + 8 + 1 + 9 + 306 + 9 + 320 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 343792250244 + 334400819076 = 586338^2 + 578274^2 .

It is not an unprimeable number, because it can be changed into a prime (678193069327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4182589 + ... + 4341708.

Almost surely, 2^678193069320 is an apocalyptic number.

678193069320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

678193069320 is an abundant number, since it is smaller than the sum of its proper divisors (1835110953000).

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

678193069320 is a wasteful number, since it uses less digits than its factorization.

678193069320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8524344 (or 8524337 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 678193069320 in words is "six hundred seventy-eight billion, one hundred ninety-three million, sixty-nine thousand, three hundred twenty".